Term
| Where do you find simple cuboidal epithelium? |
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Definition
| Kidney tubules, thyroid, excretory ducts of glands |
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Term
| Where do you find simple squamous epithemlium? |
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Definition
| Lungs, blood vessels (endothelium), peritoneum, pleura, pericardium (mesothelium). |
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Term
| Where do you find simple columbar epithelium? |
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Definition
| Intestin, gallbladder, large bile duct. |
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Term
| Where do you find pseudostratified epithelium? |
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Definition
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Term
| Where do you find keratinized and non-keratinized stratified squamous epithelium? |
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Definition
| Keratinized = skin; non-keratinized = esophogus & vagina. |
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Term
| Where do you find stratified cuboidal/columnar cells? |
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Definition
| Ducts of sweat glands, large glandular ducts. |
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Term
| What is the difference between endocrine and exocrine glands? |
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Definition
| Endocrine has no ducts. Exocrine secrete into ducts, are epithelial derived, and are continuous with the surface epithelium. |
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Term
| Name one type of uni-cellular exocrine gland and two places where it is located. |
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Definition
| Goblet cell in intestine and trachea |
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Term
| Which kind of sweat glands are most numberous, eccrine, apocrine, or sebaceous? Where are they concentrated? Classify glands by size. |
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Definition
| Eccrine is most numerous & concentrated on forehead, axilla, and palms. It is smallest. Apocrine is larger and Sebaceous glands are the largest. |
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Term
| Which of the three sweat glands is NOT simple coiled tubular and what kind of gland is it? |
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Definition
| Eccrine and Apocrine sweat glands are simple coiled tubular. Sebaceous glands are simple branched acinar/alveolar. |
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Term
| Where are apocrine sweat glands located and what do they secrete? |
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Definition
| Apocrine glands are in the axilla, anal & genital regions and produce a viscous secretion into hair follicles. |
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Term
| Does the duct or secretory portion of an eccrine sweat gland contain clear and dark cells? Which, (clear or dark) rest on the BM? |
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Definition
| Secretory portion. Clear cells rest on basement membrane. |
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Term
| What is the cutaneous plexus? |
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Definition
| Between dermis and hypodermis. Contains blood vessels, excretory portions of sweat glands, sebaceous glands, and superficial portions of hair follicles. Deep to subpapillary plexus. |
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Term
| What is the subpapillary plexus? |
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Definition
| Between papillary and reticular dermis. Superficial to the cutaneous plexus. |
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Term
| Name the layers of skin epithelium from superficial to deep. |
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Definition
| Corneum, lucidum, granulosum, spinosum, basale. |
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Term
| What are the characteristics of melanocytes? |
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Definition
| Neural crest derived, cell body in stratum basale, synthesize melanin from oxidation of tyrosine->DOPA->Melanin. |
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Term
| What are the two layers of the dermis called? |
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Definition
| Papillary (lots of capillary beds, more cells, collagen fibers not easy to discern) and reticular (dense, irregular, collagenous). |
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Term
| Name the three sheeths of a hair follicle. |
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Definition
| Internal root sheath-derived from hair matrix. External root sheath continuous with basal layers of epidermis. Connective tissue sheath- blends with dermis. |
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Term
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Definition
| neural crest derived. tactile mechanoreceptors, in basal lamina, have granules in cytoplasm. Have nerve plate with myelinated axon |
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Term
| Define a langerhans cell. |
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Definition
| Derived from bone marrow. Found in stratum malpighi/spinozum. peripheral dendritic cell of immune system that presents antigens in t cells in dermis to initiate immune response. |
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