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66 Cards in this Set
- Front
- Back
Tissue |
Group of cells that usually have a common origin and function together to carry out specialized actuviries |
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Histology |
Study of tissues |
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Pathologist |
A physician who examines cells and tissues to help other physicians make accurate diagnosis |
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4 types of body tissue |
Epithelial Connective Muscular Nervous |
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3 characteristics of epithelial tissue |
1. Covers body surfaces lines hollow organs body cavities and ducts 2.forms glands 3. Allows body to interact with both its internal and external environments |
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3 characteristics of connective tissue |
1. Supports and protects 2. Binds organs together 3. Stores energy reserves as fat |
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Function of muscle tissue |
Has the ability to contract to produce movement |
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Function of Nervous tissue |
Generates an action potential or nerve impulse that activates glandular secretions and muscular contractions |
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9 features of epithelial tissue |
Closely packed cells Arranged in sheets Sits on basement membrane Plentiful cell junctions Surfaces Avascular Has a nerve supply High mitotic rate Protection, filtration, secretion and absorption are the function
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Function of simple cells |
Diffusion, osmosis filtration secretion and absorption |
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Function of stratified cells |
Protection |
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Function of pseudostratified cells |
Secretion. May have cilia or goblet cells |
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Function of squamous cells |
Rapid movement of substances |
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Function of Cuboidal cells |
Secretion and absorption |
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Function of columnar cells |
Secretion or absorption. May have cilia or microvili |
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Where are simple squamous cells found? |
Sites of filtration; lungs and kidneys |
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Where are simple cuboidal cells found |
Ovaries lines kidneys small ducts and many glands. Makes up secreting portion of some glands |
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Where are nonciliated columnar cells found (contains goblet cells or microvili) |
Gastrointestinal and gallbladder |
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Where are ciliated simple columnar cells found? |
Falopian tubes and some bronchials of the respiratory tract |
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Where are pseudostratified columnar cells found |
Secretes mucus that traps particles in the respiratory tract |
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Where are keratinized stratified squamous cells found? |
Superficial layers of the skin |
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Where are nonkeratinized stratified squamous cells found |
Areas that want to retain moisture. Vagina mouth esophagus |
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Where are stratified cuboidal cells found |
Rare. Found in adult sweat glands |
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Where are stratified columnar cells found |
Protection and secretion. Found in urethra and ducts of some glands |
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How do transitional cells change in the bladder or urethra |
Stratified cuboidal —-> stratified squamous |
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How do holocrine glands function |
Cells ruptures in the process of secreting product. (Oil goands) |
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How do merocrine glands function |
Most common gland. Works through exocytosis. (salivary, pancreas) |
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How do apocrine glands work |
Product is made within the cell and pinched off and secreted (mammary glands) |
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Function of connective tissue |
Supports and protects |
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5 features of connective tissue |
1. Widely spaced cells with a lot of variety that float in abundant extracellular matrix 2. Does not usually occur on free surfaces 3. Has a nerve supply except cartilage 4. Has a rich blood supply except for cartilage and tendons 5. Matrix may be fluid semi fluid or calcified. Matrix is created by connective tissue |
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What is the most common cell found in connective tissue |
Fibroblasts |
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Function of collagen fibers |
Strength and elasticity |
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Elastic fibers function |
Creates elasticity that allows tissue to be stretched up to 150% |
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Reticular fiber function |
Branching. Creates stroma that supports soft organs |
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Macrophage function |
Phagocytosis. Type of white blood cell |
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Plasma cell function |
Develop from lymphocytes and create antibodies. Found in nonkeratinized tissue |
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Mast cells function |
Release histomine and tend to tissue damage. Most abundant in red blood cells |
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Where does connective tissue develop from |
Mesenchyme |
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Areolar loose connective tissue function |
Forms subcutaneous layer that attaches skin to underlying tissues and organs |
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Function of reticular loose connective tissue |
Forms stroma that supportssoft organs |
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Function of dense regular connective tissue |
Designed for pulling in 1 direction. Found in tendons and ligaments and mainly made of collagen |
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Function of dense irregular connective tissue |
Withstands pulling in many directions. (Heart valves pericardium) |
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Dense connective elastic tissue function |
Stretch. (Lungs, arteries trachea) |
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How does cartilage form |
Chondroblasts lay the matrix then mature into chondrocytes |
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What is the most abundant cartilage |
Hyaline. Found where long bones meet bone. (Larynx, nose and knee) |
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What is the strongest cartilage and where is it found |
Fibrocartilage. Veryebral discs and miniscus (pads between bones) |
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Where is elastic cartilage found and what is its function |
Strength and elasticity. External upper ear. |
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What is the difference between tendons and ligaments |
Tendons attach muscle to bone ligaments attach bone to bone |
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What is the difference between an osteon and trabeculae |
Osteon is found in compact bone trabeculae is found in spongy bone |
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Features of skeletal muscle |
Multinucleated striated and voluntary |
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Features of cardiac muscle |
Striated and involuntary |
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Features of smooth muscle |
Involuntary and non striated. Spindle shaped cells found in arteries gastrointestinal tract and uterus. Function is motion |
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What is the difference between neurons and neuroglia |
Neurons generate the nerve impulse neuroglia support neurons |
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6 functions of the skin |
1. Thermoregulation 2. Blood reservoir 8-10% of blood is moving through skin 3. Protection 4. Sensations 5. Excretion and absorption 6. Synthesis of vitamin d |
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What compound is formed from vitamin d synthesis |
Calcitriol |
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What is the name of the receptor that detects pressure in the skin |
Lamellated corpuscles |
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What is the order of the layers of the skin from superficial to deep |
Epidermis Dermis Subcutaneous |
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What is the function of langerhans cells in the skin |
White blood cell that provides immunity |
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Function of merkel cell in the skin |
Detects touch |
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Layers of the skin from deep to superficial |
Stratum basale Stratum spinosum Stratum granulosum Stratum lucidum Stratum corneum |
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What type of tissue is the dermis made of |
Dense irregular connective tissue |
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What are striae |
Stretch marks |
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Where are oil glands absent |
Palms of hands and soles of feet |
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Where are oil glands largest |
Breasts face neck and superior chest |
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What do ceruminous glands produce |
Ear wax or cerumen |
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Order of phases in deep wound healing |
Inflammatory Migratory Proliferative Maturation |