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BIOL 207 A&P (Integumentary System) Questions And Answers Latest Update
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BIOL 207 A&P (Integumentary System) Questions And Answers Latest Update
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2024/2025BIOL 207: A&P (Integumentary
System) Questions And Answers
Latest Update
organ ANS✔✔ two or more types of tissues grouped together and performing specialized functions
integumentary system ANS✔✔ consists of the skin and its accessory structures (hair, nails, glands,
sensory receptors)
epidermis ANS✔✔ outer layer of the integumentary system made of stratified squamous
epithelium
avascular
dermis ANS✔✔ inner layer of the integumentary system
- thicker
- papillary (areolar)
- reticular (dense irregular)
connective tissue
subcutaneous layer ANS✔✔ hypodermis
insulating layer
mostly adipose tissue
not considered part of the skin
subcutaneous injection ANS✔✔ injection below the skin into the adipose tissue
intramuscular injection ANS✔✔ injection into the muscle
, 2024/2025
keratin ANS✔✔ tough, fibrous, waterproof protein stored in the cells
common on the stratum corneum
Basale, spinosum, granulosum, lucidum, corneum ANS✔✔ DEEP
- Stratum ________________
- Stratum ________________
- Stratum ________________
- Stratum ________________ (only in thick skin)
- Stratum ________________
SUPERFICIAL
stratum basale ANS✔✔ deepest epidermal layer
- single layer of stem cells
- produces 2 daughter cells (one remains as stem cell)
- friction accelerates cell production
stratum spinosum ANS✔✔ Second deepest epidermal layer
- several layers thick
- web-like system of intermediate pre-keratin filaments attached to desmosomes
- resists tension
- lots of melanosomes and dendritic cells
stratum granulosum ANS✔✔ Third deepest epidermal layer
- 4-6 cells thick
- cells flatten, organelles disintegrate, keratinization
apoptosis ANS✔✔ controlled cell death
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