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119 Cards in this Set
- Front
- Back
Type of junction that forms a tight leakproof seal Ex stomach, intestines, bladder
CHOOSE FROM: Tight, Adherens, Desmosomes, Hemidesmosome, Gap Junction |
Tight Junction between cells
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type of junction that uses a protein called cadherin, works like a belt to keep the pants from falling down as they expand and contract
CHOOSE FROM: Tight, Adherens, Desmosomes, Hemidesmosome, Gap Junction |
Adherens junction between cells
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type of junction "spot welds" between cells. Hold tissue together against mechanical disruption, these junctions use cadherin between cells and between to form a continuous strong structure
CHOOSE FROM: Tight, Adherens, Desmosomes, Hemidesmosome, Gap Junction |
Desomsomes Junction between cells
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type of junction found between cell and basement membrane. protein integrin is used to link hemidesmosome to basement membrane. on cell side-intermediate filaments anchor to cytoskeleton to integrins which connect to basement
CHOOSE FROM: Tight, Adherens, Desmosomes, Hemidesmosome, Gap Junction |
Hemidesmosome Junction between cells
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type of junction, a protein connexin forms pore-like structures called connexons. a connexon allows small ions to pass from cell to cell. monomers and small polymers can pass between cells. connexons can seal off a sick cell
CHOOSE FROM: Tight, Adherens, Desmosomes, Hemidesmosome, Gap Junction |
Gap junction between cells
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Type of tissue that forms a covering that protects the body. this covers lumen in intestinal tract
choices; epithelial, connective, muscular, or nervous |
epithelial tissue
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type of tissue holds structure of body, used for strength and hold organs together. ex. bone and tendons are connective tissue
choices; epithelial, connective, muscular, or nervous |
Connective tissue
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type of tissue that moves body parts around
choices; epithelial, connective, muscular, or nervous |
muscular tissue
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type of tissue that is in the CNS(brain and spinal cord) and PNS (ganglia and nerves)
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nervous tissue
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name the two layers of the epithelium and which one is on top and which is on basement
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Free Apical surface-top
basal surface- basement |
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What two layers is makes up the basement membrane
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basal lamina-nearest epithelial tissue
reticular lamina- deeper than basal |
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what type of tissue is below the basement membrane
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connective tissue
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name the three types of arrangements that can be found in the epithelial tissue
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simple- cells in single layers but all touch basement
pseudostratified-appear to have layers but all touch basement stratified- have layers only lowest layer toush the basement |
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name the three types of shapes of epithelial tissue
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squamos- flat, wide "paving stone" cells
cuboidal- cells are as wide as tall columnar- cells taller than wide |
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how many combinations can we make of epithelial tissues
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8 combinations
simple squamous epithelia simple cuboidal epithelia simple columnar epithelia pseudostratified columnar epithelia stratified squamous epithelia stratified cuboidal epithelia stratified columnar epithelia transitional epithelia |
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describe simple squamous epithelia
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simple layer of flat cells
ex lining of heart, air sacs, eardrum, lining of blood and lymph vessels, kidney filtration, one layer of serous membranes |
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describe simple cuboidal epithelia
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single layer of cube-shaped cells
ex. surface of ovaries, eye lens and pigement epithelium, many glands, kidney tubules often found where secretion and absorption take place |
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describe simple columnar epithelia
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single layer of column-like cells
nonciliated- GI tract, glandular ducts, gallbladder ciliated- respiratory tract, efferent ducts testes, canal of spinal cord and ventricles of brain, uterine tubes/uterus, paranasal sinuses |
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describe pseudostratified columnar epithelium
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appeals to have layers/ all cells attached to basement membrane
ciliated- upper respiratory airways nonciliated- glands, epididymis and urethra |
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describe stratified squamous epithelia
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flat cells. most commone epithelia. makes up skin and mucous membranes
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describe stratified cuboidal epithelia
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two or more layers. sweat gland ducts, esophageal gland duct, and part of male urethra
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describe stratified columnar epithelia
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two or more layers, made up of tall cells, part of urethra, part of anal mucous membrane, excretory ducts of some glands, part of conjunctiva in eye
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describe transitional epithelia
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shape of cells changes depending on state of stretch. several layers
ex. bladder nearby urethra and ureters. full bladder: squamous cells empty bladder: cuboidal cells |
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What is another name for unbranched gland
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simple glands
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what is another name for branched gland
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compound glands
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what is another name for tube-like gland
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tubular gland
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what is another name for grape-like gland
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acinar "alveolar" gland
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what is another name for grape-like and tube-like gland
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tubulacinar gland
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Name the three types of exocrine glands
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Merocrine, Apocrine, and Holocrine glands
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Describe steps in formation of secretory product Merocrine Secretion
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1. instructions transcribed to mRNA in nucleus, 2. synthesized in rough ER, 3. packaged in Golgi Complex, 4. formed into secretory vesicle, 5. released. protein is formed in RER. it's packages into vesicles in Golgi complex that can fuse with cell membrane on demand to release cell's secretory product
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Describe Apocrine secretion's steps in formation of secretory product
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1. instructions transcribed to mRNA in nucleus, 2. synthesized in rough ER, 3.packaged in golgi,4.formed into vesicle, 5.end of cell breaks off and dissolves. vesicles gather together in a little cell life raft which is broken open and releases vesicle product. male prostate and female mammory glands secrete their products this way
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describe holocrine secretion steps in formation of secretory product
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1.instruction transcribed to mRNA in nucleus, 2.synthesized in rough ER, 3.packaged in Golgi complex, 4a. cell dies releasing product, 4b. lost cell replaced by division of stem cells
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describe connective tissue
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cells loosely arranged with a lot of space between
abundant extracellular matrix-substance secreted by cells |
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name the two embryonic connective tissue
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mesenchyme and mucous connective tissue
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name the five types of mature connective tissue
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loose connective tissue, dense connective tissue, cartilage, bone, liquid
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What does connective tissue in embryo do
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rapidly dividing cells are gathering together into organs and tissues so they must be able to move freely
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what does connective tissue in mature human
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connective tissue holds things in place does not want to allow movement of cells
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define fibroblasts
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most numerous of connective tissue cell and secrete fibrous components
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define adipocytes
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fat cells, store triglycerides
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define mast cells
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important in inflammation, produce histamine
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define White Blood Cell
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include immune cell
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define macrophages
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fixed or wandering destroy invaders
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define plasma cells
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fromed from WBC secrete special proteins (antibodies) help attack invaders
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Fibroblasts
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lay down protein fibers. collagen is made by fibroblasts. elastin and reticular fibers are also products
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what type of embryonic connective tissue almost fluid in consistency cells are widely spaced
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mesenchyme
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what type of embryonic connective tissue in umbilical cord, jelly-like connective tissue "wharton's jelly"
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mucous connective tissue
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Areolar of loose connective tissue
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most common found in layers supporting skin mucous membranes support and surround organs
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adipose of loose connective tissue
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fat found under skin around heart and kidney in yellow bone marrow and forms cushins in joints and eye sockets
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reticular loose connective tissue
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loose meshwork of reticular cells, forms stroma (supporting framework) of liver, spleen, lymph nodes and basement membrane
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type of dense connective tissue "white shiny sheet" made up of collagen fibers in regular bundles with a few fibroblasts found in tendons, ligaments, and sheetlike tendons-aponeuroses dense structure and lack of blood supply
slow to heal |
dense regular connective tissue
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type of dense connective tissue has fibroblasts and collagen fibers collagen runs in many different directions found in fascia-which form sheets between muscles found in deeper part of skin, in "peri-" tissues that surround bone, cartilage, and heart
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dense irregular dense connective tissue
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type of dense connective tissue made up of many oriented elastic fibers and few scattered fibroblasts
found in lungs, trachea, bronchial tubes, and vocal cords ligaments between vertebrae and ligaments of penis |
elastic dense connective tissue
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what type of cartilage most abundant shiny bluish-white substance consists of fine collagen fibers and many chondrocytes, chonrocytes are enclosed in lacunae
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hyaline cartilage
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type of cartilage that collagen fibers are coarser and gathered together into thick bundles, found in pubic symphysis, discs, padding of kness (menisci) and where tendon inserts into cartilage
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fibrocartilage
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type of cartilage makes up the epiglottis, external ear, and tubes that connect ear to mouth (eustachian tube)
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elastic cartilage
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what type of bone that is complex and regular structure consists of osteons
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compact bone
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what type of bone is irregular structure; spikes of mineralized tissue have ample space between for redbone marrow
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spongy bone
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what is plasma made of
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salt wat and proteins
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describe lymph and what it does
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filtrate of blood with most of the cells and some protein removed. WBC move around in lymph to guard against invaders
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what type of membrane lines interface between the body cavities and the outside world. the connective tissue layer of mucous membrane is called lamine propria. example digestive tract, respiratory tract, and reproductive tract
mucous, serous, cutaneous membranes |
mucous membrane
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what type of membrane forms lining between body wall and internal organs example parietal layer, serous fluid, and visceral layer
mucous, serous, cutanerous membranes |
serous membrane
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type of membrane that skin covers outside of body
mucous, serous, cutaneous membranes |
cutaneous membrane
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what type of membrane lines space between two bones forming a joint. lubricates joints
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synovial membrane
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what type of muscle is voluntary and striated. we "choose" to use this muscle. multiple nuclei visible. fused to form a long thin tube of myofiber called syncytium
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Skeletal muscle
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what type of muscle is involuntary and striated. Fibers are joined in branches, not parallel. one or two nuclei per fiber
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cardiac muscle
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what type of muscle is involuntary and nonstriated. single cells with one nucleus and cytoskeleton is arranged in random fashion so it does not appear striated. example; gut tube is lined with smooth muscle for easy digestion
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smooth muscle
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what layer of skin is comprised mostly of dead cells, which have expelled their nucleus and all organelles and have become bags of protein called keratin
choose from;epidermis, dermis, and SubQ |
epidermis
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what layer of skin has living layer of tissue under epidermis contains blood vessels, nerves, glands, adn living skin cells. hair roots are in the dermis and some muscle(arrector pili)
choose: epidermis, dermis, and subQ |
dermis layer
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what layer of skin has areolar and adipose connective tissue
choose: epidermis, dermis, and subQ |
subQ layer
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what are the superficial layers from deepest to superficial
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stratum basale, spinosum, granulosum, lucidum, corneum
before signaling get legal counsel |
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what layer of the 5 layers contains a single row of cuboidla and columnar keratinocytes that contain scattered tonofilaments
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stratum basale
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what layer of the 5 layers contains 8-10 rows of many-sided keratinocytes with bundles of tonofilaminets armlike processes of melanocytes and langerhan cells
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stratum spinosum
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what layer fo the 5 layers contains 3-5 rows of flattened keratinocytes which organelles begin to degenerate. protein keratinocytes converts tonofilaments into keratin and lamellar glanules which release lipid-rich water-repellent secretions
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stratum granulosum
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what layer of the 5 layers presents only in fingertips, palms, and soles. 3-5 rows of clear flat dead keratinocytes
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stratum lucidum
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what layer of the 5 layers has 25-30 rows of dead flat keratinocytes that contain mostly keratin
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stratum corneum
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keratinocytes are constantly made in the stratum____ and as cells are pushed more superficially they lose their ____ and _____
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basale. nucleus and organelles
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thin skin lacks which stratum layer
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stratum lucidum
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thick skin is also called
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Glabrous
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what are the two regions of the dermis
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papillary and reticular regions
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which region of the dermis is 1/5 of the thickness of the dermis and has ridges that penetrate into epidermis and contain blood vessels and sensory structures known as Meissner corpuscles and free nerve ending. it has a tight attachment to the epidermis
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Papillary region of dermis
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which region of the dermis is 4/5 of dermis. nerves and blood vessels run through the dermis here and also hair roots and glands.
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reticular region
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stretching of connective tissue can cause tears which is called ..
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striae or stretch marks
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Pheomelanin skin pigment
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yellow to red
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eumelanin skin pigment
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brown to black
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What amino acid is melanin made from
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tyrosine in an organlled called melanosome
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Name the three skin pigments
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melanin, hemoglobin, and carotene
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what pigment has red pigment in blood that gives skin a pinkish cast. little melanin is stored in melanocytes
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hemoglobin
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what pigment forms deposits on skin, precursor to vitamin A and is found in intensely colored fruits and veggies
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cartone
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what are the four cells types found in epidermis
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dead keratinocytes, melanocytes, langerhan, and merkel disc
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Keratins and lipids help make a ..
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waterproof seal
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what is the function of epidermis
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offers protection, but damage does not hurt living tissue
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what is the function of dermis
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living tissue but capable of healing, protects against temp changes and dehydration
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what is the function of subq layer
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insulation of blood vessels
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superficial or deep wound?
wounds that do not penetrate the epithelium. dividing cells of stratum basale migrate into wound the normal process of division produces nucleated keratinocytes and these get pushed upward by the newly-divided keratinocytes as they mature to corneocytes |
superficial wounds
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superficial or deep wound?
penetrate blood vessel. blood fills the wound then clots into a semi-solid mass. monocytes in clot mature into macrophages. neutrophils and macrophages work to destroy invaders. cells of stratum basale migrate to replace epidermis. fibroblasts lay new fiber |
deep wounds
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if sweat glands release fluid to the surface to cool skin by evaporation. blood vessels dilate and shed more heat to the environment. this makes the skin appear pink or red, what is that body trying to do
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body wants to shed heat
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head is conserved, sweat glands stop production and blood vessels constrict. blood stays internal to the dermis behind insulated layer of fat. skin may appear pale of blue. what is the body trying to do
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body is too cold
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what are the two primary thermoregulatory mechanisms
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circulation and sweating
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what common disease of aging skin has dilated blood vessels and pimples around nose and cheeks. no known cause
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rosacea
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what do eccrine sweat glands do
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are needed as effectors in homeostatic loops for thermoregulation. these glands lie in dermis and open to skin surface through a duct. secrete a sweat that in thin dilute solution of salt water, urea, uric aced, ammonia, amino acids, glucose
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what do apocrine sweat glands do
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similar to eccrine but more viscous. they don't open to the skin but associated with hair follicles. they are stimulated to release their product during emotional stress and sexual excitement. these sweat glands are developed with puberty. line in subQ layer.
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what is the visible portion of hair made up of
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medulla, cortex, and the outside covering or cuticle
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brown or black color pigment hair is called
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eumelanin
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blonde or red color pigment hair is called
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pheomelanin
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white or gray occurs when
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when pigment production is reduced or halted and air bubbles replace pigment
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what do the Meissner corpuscles and merkel disc sensory receptors do
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help us perceive light touch
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what do the free nerve endings do
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mediate painful sensations
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the pacinian (lamellated) corpuscle is
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layered like an onion and responds preferentially to vibration
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what happens in the first state of the growth cycle of hair
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growth (anagen) stage: hair matrix cells at base of follicle divide this pushes the hair a little further out of the root. lasts 2-6 years
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what happens in the second stage of the growth cycle of hair
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Regression (Catagen) stage: hair matrix stops dividing. lasts 2-3 weeks
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what happens in the third stage of the growth cycle of hair
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Resting (telogen) stage: lasts 3 months. hair falls out at the end and is replaced by new hair
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what degree burn is only epidermis is involved, skin reddens, no permanent damage and skin returns to normal in about 1 week
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first degree burn
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what degree burn is heat energy penetrates deeply and both epidermis and dermis is damaged. blood vessels leak fluid and form blisters as skin fill with filtrate blood. hair and glands are not typically damaged
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second degree burn
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what degree burn is "full thickness" destroys all layers of skin. cells die and skin function is lost in area. Dead skin may be black, cherry red, or ash white
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third degree burn
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what % of surface does an arm have in rule of nines
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9%
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what % does the perineum have in rule of nines
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1%
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what % does anterior trunk have in rule of nines
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18%
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What percent does a thigh have in rule of nines
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9%
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what year and who first demonstrated disinfection (noticed from working on cadavers and then delivering babies and the babies getting puerperal fever)
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1847 Ignatz Semmel
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