Term
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Definition
-protect and support
-store E as fat, bind organs
-immunity |
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Term
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Definition
-contraction/generation of force
-heat |
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Term
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Definition
-body surfaces
-hollow organs, cavities, ducts
-glands
-internal/ external env |
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Term
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Definition
-changes in condition
-action potentials
-activate musc. contractions and -glandular secretions |
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Term
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Definition
| -contact points b/w the P.M. of tissue cells |
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Term
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Definition
-web-like transmembrane proteins sew outer adjacent plasma membrane
-line stomach, intestines, urinary bladder
-prevent leakage |
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Term
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Definition
-plaque
-Cadherins: glycoproteins
-Cadherins insert into plaque from oppo. side of P.M. across intracellular space to cadherins of adj. cell
- adhesion bells: extensive zones
-help resist separation |
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Term
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Definition
| dense layer of protein on the inside of P.M. that attaches both to membrane proteins and to microfilaments of cytoskeleton |
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Term
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Definition
-contain plaque, cadherins that extend -> intercellular space.
-plaque does not attach to microfilaments, but to intermediate filaments (keratin)
-filaments extend from desmosome on one side thru cytosol to desmosome on oppo. side; spot-weld like junctions
-Epidermis, cardiac muscles |
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Term
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Definition
-half desmosome; don't like adj. cells
-integrins attach to intermediate filaments (keratin) and protein Laminin in basement membrane.
-anchor cells |
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Term
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Definition
-Mem. Proteins Connexins form tiny fluid-filled tunnels -> Connexons
-Connexons connect adj. cells
-P.M. not fused together but narrow intercellular space.
-Ions/ small molecules diffuse
-transfer of wastes/ nutrients, communication, quick spread of nerve/ muscle impulses |
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Term
| Differences b/w epithelial and conn. tissue |
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Definition
1. # of cells in extracellular matrix
2. Epithelial tissue blood supply vs. Conn tissue blood supply
3. Epithelial forms surface layers
-> found together |
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Term
| 3 major funcs. of epithelium |
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Definition
1. selective barriers
2. secretory surfaces
3. protective surfaces |
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Term
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Definition
-faces body surface, a body cavity, the lumen of organ, a tubular duct
- may contain cilia/ microvilli |
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Term
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Definition
-face adj. cells
-may contain tight juncs., adherens juncs., desmosomes, gap junctions |
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Term
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Definition
-deepest layer
-adhere to basement mem. |
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Term
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Definition
1. Basal Lamina
2. Reticular Lamina
-form surface along which epithelium migrates during cell growth and wound healing |
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Term
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Definition
-closer to/ secreted by epi. cells -Laminin, Collagen, Glygoproteins, Proteoglycans
-Laminin adheres to integrins in hemidesmosomes, therefore attach epi. cells to basement mem. |
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Term
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Definition
-closer to underlying conn. tissue
-contains collagen produced by Conn. tissue cells fibroblasts |
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Term
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Definition
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Term
| Covering & Lining Epithelium |
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Definition
-outer coverings of skin & internal organs
-inner lining of blood vessels, ducts, body cavities
-interior of respiratory, digestive, urinary, reproductive systems |
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Term
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Definition
-secreting portion of glands
-thyroid glands, adrenal glands, sweat glands |
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Term
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Definition
-diffusion, osmosis, filtration, secretion, absorption
-Secretions vs. Absorption |
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Term
| Pseudo-stratified Epithelium |
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Definition
-cell nuclei @ diff. levels
-all cells rest on basement mem.
-cells extend to apical surface may contain cilia
-other secrete mucous |
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Term
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Definition
| 2 or more layers in locations of wear & tear |
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Term
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Definition
| -thin, allow rapid passage |
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Term
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Definition
-cubes
-microvilli maybe
-secretion/ absorption |
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Term
|
Definition
-taller, protect underlying tissue
-cilia, microvilli maybe
-absorption/ secretion |
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Term
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Definition
-change shape; squamous -> cuboidal -> squamous
-urinary bladder |
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Term
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Definition
-lines cardio and lymph system -> endothelium
-lining of serious mem. -> mesothelium
-not found where wear & tear |
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Term
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Definition
-ovaires, capsule of lens of eye, secreting portion of thyroid, duct of pancreas
-secretion/ absorption |
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Term
| Non Ciliated Simple Columnar |
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Definition
-microvilli & goblet cells
-lines GI tract, gallbladder |
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Term
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Definition
-bronchioles, fallopian tubes, ventricles of brain
-Cilia beat in unison |
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Term
| Pseudostratified Columnar |
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Definition
ciliated- upper respiratory tract
non ciliated- larger ducts of glands, male urethra |
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Term
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Definition
-1st line of defense
-keratinized vs. non keratinized |
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Term
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Definition
-hormones diffuse directly into blood stream
-pituitary gland, pineal gland, thyroid, adrenal, etc |
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Term
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Definition
-hormones into ducts that empty onto surface
-sweat, oil, earwax glands, salivary glands
-simple vs. compound
-tubular vs. acinar |
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Term
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Definition
-simple tubular
-simple branched tubular
-simple coiled tubular
-simple acinar
-simple branched acinar |
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Term
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Definition
-Compound tubular
-compound acinar
-compound tubuloacinar |
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Term
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Definition
-secretions are synthesized on ribosomes of ER; processed by Golgi complex; released in vesicle via exocytosis
-Salivary and pancreas |
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Term
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Definition
-accumulate their secretory product at apical surface; portion of cell pinches off by exocytosis to release secretion.
-mammary glands |
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Term
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Definition
-accumulate secretions in cytosol and ruptures
-sebaceous gland of skin |
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