Term
| Four types of tissue in the body and slight definition |
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Definition
1. Epithelial (covering)
2. Connective tissue (support)
3. Muscle tissue (movement)
4. Nervous tissue (control) |
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Term
| What does Epithelium tissues do? |
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Definition
Covering Epithelium
-Covers a body surface
-Lines a body cavity (on external and internal surfaces)
Glandular epithelia
-fashions the glands of the body (secretory tissue in glands) |
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Term
| 6 functions of Epithelium tissue |
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Definition
1. Protection
2. Absorption
3. Filtration
4. Excretion (sweat)
5. Secretion(mucus cells)
6. Sensory reception |
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Term
| 3 characteristics of Epithelial Tissue |
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Definition
1. Polarity (top and bottom)
2. Closely packed cells
3. Avascular but innervated (no blood, but nerves
4. High rate of regeneration |
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Term
| Polarity of Epithelial Tissue |
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Definition
Apical surface: upper surface
Basal surface: inner surfface
-microvilli forms brush borders (inestine)
-cilia (moves, lining of trachea)
-noncellular basal lamina
(adhesive sheet of glycoproteins secreted by epithelial cells
-works as a filter to see what can diffuse from underlying connective tissue. |
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Term
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Definition
| Lower layer of Epithelial tissue that controls diffusion from connective tissue below. A place for wounded epithelial cells to regenerate. |
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Term
| Closely packed cells of Epithelial Tissue |
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Definition
| Has tight junctions and Desmosomes |
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Term
| Explain Avascular but innervated Epithelial Tissue |
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Definition
-No blood vessels
-Does have nerves
-E.Tissue is nourished by stubstances diffusing from blood in underlying connective tissue |
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Term
| High rate of regeneration for Epithelial Tissue |
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Definition
| Cells reproduce rapidly when the whole is being injured, replace lost cells by division. |
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Term
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Definition
| Single cell layer (found where absorption, secretion, and filtration occur |
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Term
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Definition
| 2 or more layers of cells stacked ontop of each other (for protection, skin) |
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Term
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Definition
| flatened and scale like tissue |
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Term
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Definition
| boxlike as tall as they are wide cells |
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Term
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Definition
| Tall and colum shaped cells |
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Term
| Pseudostratified Columnar Epithelium |
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Definition
Single layer of cells of differing heights, some don't reach free surface, different level of nuclei
-secretes mucus
(found in sperm carrying ducts, trachea, upper respitory tract |
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Term
| Transitional epithelium tissues |
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Definition
llooks like stratified squamous and stratified cuboidal. Bottom looks like squamous and top looks like cuboidal
-Stretches readily and permits distension of urinary organ by contained urine
(Lines ureters, urinary bladder, and part of the urethra |
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Term
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Definition
| Simple squamous epithelium: The lining of lymphatic vessels, blood vessels, and heart |
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Term
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Definition
| Simple squamous epithelium: Epithelium of serous (around organs) membranes in the ventral body cavity |
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Term
| Simple Cuboidal Epithelium |
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Definition
Description: Single layer of cublike cells with large spherical central nuclei
Function: Secretion and absorption
Location: Kidney tubules, ducts and secretory portions of small glands, ovary surface |
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Term
| Simple Columnar Epithelium |
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Definition
Desc: Single layer of tall cells with round to oval nuclei, some have cilia, may contain mucus secreting glands
Funct: Absorption, secretion of mucus, enzymes and other stuff, cilia propels mucus
Location: Non cilia: digestive tract (stomach to anal canal), galbladder, excretory ducts
Cilia'd: small bronchi, uterine tubes, some of uterus |
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