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114 Cards in this Set
- Front
- Back
tissues are the ____ form of teamwork in the body
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simplest
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what are the four major type of tissues in the body?
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1. Epithelial
2. Connective 3. Muscular 4. Nervous |
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the study of tissues is called what?
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histology
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_____ ____ is widespread throughout the body, covers organs, and lines the body surface
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epithelial tissues
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What are some characteristics of epithelial cells?
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they are anchored to a basement membrane, are made up of tightly packed cells containing little intercellular material, generally lack blood cells, and are replaced frequently
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What is the function of epithelial cells?
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for protection, secretion, absorption, excretion, and sensory reception.
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epithelial cells make up to what percentage of body weight?
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3%
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what makes epithelial cells different from the rest?
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1. Dont move (unlike muscle)
2. Don't send messages (unlike nervous tissue) 3. Their cells touch one another (unlike connective) |
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what are the three shapes of epithelial cells?
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1. squamous (remember being squashed like a pancake)
2. cuboidal (shaped like a cube) 3. columnar (shaped like a column) |
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shape of epithelial cells is not enough, cells of same shape have different organization known as ____ and _____
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SIMPLE and STRATIFIED
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Further division in epithelial tissues of stratified is seen, what are they?
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ciliated and unciliated
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_____ _____ _____ is made up of a single layer of thin, flattened cells
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simple squamous epithelium
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what is the function of simple squamous epithelial tissue?
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for diffusion, thus functions in the exchange of gases in the lungs and lines blood and lymph vessels as well as body cavities
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_____ _____ ____ consists of a single layer of cube-shaped cells with centrally located nuclei
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simple cuboidal epithelium
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what are the functions of simple cuboidal epithelial?
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functions in secretion and absorption in the kidneys, and in secretion in glands.
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____ _____ ___ is made up of a row of elongated cells whose nuclei are located near the basement membrane. It may be ciliated
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simple columnar epithelium
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what are the functions of simple columnar epithelial?
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lines the uterus, stomach, and intestines. It protects underlying tissues, secretes digestive fluids, and absorbs nutrients.
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_____ ______ _____ cells appear layered due to the varying positions of their nuclei within the row of cells, but are truly layered
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pseudo-stratified columnar epithelium
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_____ ______ ____ is made up of layers of flattened cells that are designed to protect underlying layers
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stratified squamous epithelium
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where is stratified squamous epithelial located?
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it make up the outer layer of skin, and lines the mouth, throat, vagina, and anal canal (OUTSIDE)
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In the skin, outer layers of cells undergo _______; however, this process does not occur where tissues remain moist in the throat, vagina, or anal canal
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kertinization
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_____ ______ _____ tissues consists of two to three layers of cuboidal cells lining a lumen of the mammary glands, sweat glands, salivary glands, and pancreas
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stratified cuboidal epithelium
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what is the function of stratified cuboidal epithelial?
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the several layers function to provide greater protection than one single layer
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_____ _____ ____ tissue consists of several layers of cells and is found in the vas deferns, part of the male urethra and parts of the pharynx
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stratified columnar epithelum
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_____ _____ is designed to distend and return to its normal size, as it does in the lining of the urinary bladder
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transitional epithelium
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what is the function of transitional epithelium?
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designed to provide distensibility and keeps urine from diffusing back into the internal cavity.
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_____ _____ is tissue made up of cells designed to produce and secrete substances into ducts or into body fluids.
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glandular epithelium
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what are the functions of glandular epithelium?
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it secretes products into ducts which are EXOCRINE: those that secrete body fluids and ENDOCRINE: those that secrete blood
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how are glands classified?
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by the way they secrete their products
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_____ glands release fluid products by exocytosis (pancreas_ and are grouped as serous which produce a water fluid or mucus which produce a thicker, protective substance
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Merocrine
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_____ glands lose portions of their cell bodies during secretion (mammary glands)
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Apocrine
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______ glands release entire cells- rapid mitosis (sebaceous glands)
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Holocrine
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Merocrine examples
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mucus, sweat, tears
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Apocrine examples
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milk, axillary sweat
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Holocrine examples
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sebaceous (oil) fluid
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What are the functions of Connective Tissue?
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Bind, Support, Protect, serve as frameworks, fill spaces, store fat, produce blood cells, protect against infection, and repair tissue damage
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What are the unique characteristics of connective tissue?
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Unlike epithelial cells, they have an abundant matrix, or intracellular material, throughout, and have good blood supply (expect cartilage)
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What are the three major cell types of connective tissue?
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Fibroblast, Macropages, Mast Cells
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_____ is the most common cell type of connective tissue, and is fixed, star-shaped cell that secretes fibers and is large in size
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fibroblast
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wandering ______ function as scavenger cells and defend against infection
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macrophages
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____ ___ are large and are located near blood vessels where they release Heparin (anticoagulant) and Histamine (promotes inflammation)
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Mast Cells
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what are the three connective tissue fibers?
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1. collagenous
2. Elastic Fibers 3. Reticular Fibers |
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Strong ____ ____ are made of the protein collagen, add stength for holding body parts together. Tendons and Ligaments
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Collagenous Fibers
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what color are collagenous fibers?
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white
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What do tendons hold together?
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muscle to bone
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What do ligaments hold together?
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bone to bone
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____ _____ are made of elastin, are stretchy and add flexibility to certain connective tissues
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elastic fibers
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what color are elastic fibers?
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yellow
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where are elastic fibers located?
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in your ear-bones, larynx
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______ _____ are thin collagenous fibers from supportive networks in a variety of tissues.
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Reticular Fibers
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where are reticular fibers located?
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lymph nodes, spleen, stroma (mattress of bed)
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Connective Tissues make up how much percentage of your body weight?
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45%
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true or false, connective tissues do not touch each other, they touch other tissues
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true
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blood is a ______ _____ that connects all the body system ______
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connective tissue, together
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_____ _____ ___ forms delicate, thin membranes throughout the body that bind body parts together such as skin and underlying organs
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Loose Connective Tissue
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loose connective tissue are also known as?
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areolar (open spaces)
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what is the universal packing material of the body?
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loose connective (areolar) tissue
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in loose connective tissue the majority of the cells are _____ that are separated by a gel-like substance that contains _____ and _____ fibers.
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fibroblast, collagenous and elastic
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____ ____ is loose connective tissue designed to store fate
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adipose tissue
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where is adipose tissue found?
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found beneath the skin, around joints, passing the kidneys, and in certain abdominal regions
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what is the function of adipose tissue?
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reserved energy supply, insults our joints, cushions
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what are white adipose tissue?
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they are broken down for nutrients
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what are brown adipose tissue?
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fuel lipids for energy to produce ATP for body heat in infants who cannot produce it
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what is the normal fat of an average body?
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18%
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adipose cells are highly _____, meaning metabolically active
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vascularized
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how many fat cells are in our body?
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40-50 million and always the same number throughout life span.
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_____ _____ ___ consists of densely packed collagenous fibers and is very strong but lacks a good blood supply
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dense connective tissue
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what is the difference between dense regular and irregular connective tissue?
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Regular- nuclei are fairly parallel to each other
Irregular- nuclei all over, fibrous each way |
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dense connective tissue are what type of fiber?
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collagenous
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what are the dense regular connective tissue used for?
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resting and pulling, one plane
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what are dense irregular connective tissue used?
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to resist forces every direction, great for shoulder capsule
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____ is a _____ ____ ____ that provides supportive framework for various structures. It lacks a vascular system and heals slowly (sprains)
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Cartilage, Rigid Connective Tissue
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____ making cartilage
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chondroblast
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____ cells (chondrocytes) that lie within lacunae in the gel-like fluid matrix
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Cartilage
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_____ (mature) helping in feeding nutrients to what is being built
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chondrocytes
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what are the three types of cartilage in connective tissue?
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1. Hyaline
2. Elastic 3. Fibrocartilage |
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the most common _____ _____, is what abundant fine collagen fibers, is found at the ends of bones and supports respiratory passages
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hyaline cartilage
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where is hyaline cartilage found?
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Found at the ends of bones, ribs toy your sternum, rings on your trachea
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What cartilage is very resistant and has lots of water?
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hyaline
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what percent of cartilage in the body is hyaline?
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80%
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____ _____, with elastic fibers provides a framework for the external ears and parts of the larynx
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Elastic Cartilage
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______, with many collagenous fibers, is tough tissue that provides a shock-absorbing function in intervertebral disks and in the knees and pelvic girdle
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Fibrocartilage
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____ is the most rigid connective tissue, with deposits of mineral salts and collagen within the matrix
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Bone
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what does the bone support/function?
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the body, protects, forms muscle attachments, and is the site for blood cell formation
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where is the site for blood cell formation?
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bone
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what are bone cells called?
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osteocytes
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why is it easier to recover from a breaking a bone than a sprain?
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because bone has a good blood supply which results in faster recovery, unlike a sprain is collagen with a low supple of blood cells
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____ is composed of cells (red and white) suspended to a liquid matrix (non-living) called ____
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blood, plasma
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what are the general characteristics of muscle tissues?
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muscle cells, or fibers, con contract and consist of three major types
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what are the three major type of muscle tissue?
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1. Skeletal
2. Smooth 3. Cardiac |
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_____ _____ ____ is a muscle tissue attached to bone
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skeletal muscle tissue
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is skeletal muscle voluntary or involuntary?
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voluntary
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what are the characteristics of skeletal muscle tissue
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the cells (muscle fibers) are long and cylindrical, striated (actin and myosin), have many nuclei and contract from nervous impulses
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what muscle tissue is responsible for the movement of bone?
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skeletal
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_____ _____ _____ is a muscle tissue that lacks striations, is unnucleated, and consists of spindle-shaped cells
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smooth muscle tissue
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where is smooth muscle tissue located?
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lines internal organs, urinary bladder, digestive tract
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is smooth muscle voluntary or involuntary?
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involuntary
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_____ _____ ____ is muscle tissue found only in the heart
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cardiac muscle tissue
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What does cardiac muscle tissue consists of?
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consists of branching fibers that are connected to each other with intercalated disks
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what muscle cells helps moves electrical impulses so muscles contract when they are suppose to?
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cardiac
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Muscle tissue make up what percentage of our body weight?
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50%
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is cardiac muscle tissue voluntary or involuntary?
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involuntary
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what is the difference between striated and smooth muscle cells?
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the arrangement! in striated is so heavily organized that its contraction are much faster and stronger than that of smooth muscle
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where are nervous tissue found?
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in the brain, spinal cord, and nerves
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what is another name for nerve cells?
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neurons
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what do neuron do?
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they conduct nervous impulses
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what are the helper cells of a neuron?
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neuroglia
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what is the function of neuroglia?
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to support and nourish the neurons
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Nervous Tissue make up what percentage of our body weight?
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2%
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Nervous tissue are responsible for conduction of chemical impulses through ______ and _____ membranes
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polarizing and depolarizing
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what is the major work force for nervous tissue? They are what you think about when you think about the brain
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neurons
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neurons have _____ to carry impulses to the cell body and _____ to carry impulses away from the cell body
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dentrites, axons
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true or false neurons transmit in several directions?
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false, they transmit in only ONE direction
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what are some other functions of neuroglia?
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provide nutrition and clean up the tissues by phagocytosis
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