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24 Cards in this Set
- Front
- Back
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Four types of tissue
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Epithelial, Connective, Muscular and Nervous
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Epithelial Position
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Line all internal cavities and passages and cover external surface
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Epithelial cells surfaces
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Apical (top), lateral (sides) and basal (bottom, rests on basement)
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The majority of epithelial cells rest on the _____ and there _____ blood vessels
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basement membrane, no blood vessels
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Single Squamous
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-Thin & Flat
-fried egg - irreg border, flat -lines ventral cavities; vessels, heart, kidney tubules, lung alveoli -diffusion, filtration, secretion and reduces friction |
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Single Cuboidal
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-Looks like an ice cube
-Ducts of glands, kidney tubules, thyroid gland -Secretion and absorption |
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Single Columnar
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-Cilia (uterine)
-non-cilia (stomach, sm. int., lg. int., gall bladder -absorbtion, mucus and enzyme secretion, movement of mucus -tall, oval nucleus in lower half of the cell |
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Pseudo-stratified Columnar
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-columnar or cuboidal
-"falsely stratified" -single layered -diff heights -nuclei staggered all over |
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Stratified Squamous
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-cubodial or columnar bottom
-flat cells on top -protects from abrasion and pathogens -keratin or not |
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Transitional Epithelium
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-stretch and recoil
-cuboidal bottom, columnar middle, lg dome shape on top -squamous when strectched at top -Lines uterus, bladder, renal pevlis |
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Conncetive tissue
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Give structural support to other tissues and organs
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Connecctive tissues composition
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Cells, fibers, ground substance
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Most common cell type, the
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Fibroblast
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FIbroblasts make
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fiber and extracellular material
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Most common protein fibers
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Collagen (strength) and Elastin (elasticity)
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Ground substance
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gel like to ridgid material holding the cells and fibers
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Adipose connective tissue
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Fat tissue storign lipids (fat) in single fat cells (adipocytes)
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Elastin
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like rubber bands, stretch and recoil
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Collagen fibers
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like steel cables, give strength
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Loose connective
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-few fibers
-cushions and protects |
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3 types of loose connective
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Aerolar, adipose, reticular
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Aerolar
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-cushions and protects, holds fluid
-beneath epithelial |
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Adipose
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-fat tissue
-protects, insulates against heat loss and stores energy as fuel -adipocytes & blood vessels -vacuales store lipid; size changes with amount -under skin; abdomen, butt, breasts, eyes & kidneys -nucleus at bottom of cell |
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Reticular
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-network of reticular fibers scattered
-physically supports cells -spleen, bone marrow, lymphs, liver, kidney |
