Integumentary System

Question 1

Epidermis structure

Answer 1

superficial part of skin; stratfied squamous epithelium

Question 2

Epidermis function

Answer 2

Prevents water loss, entry of chems and microorgs, protects against abrasion and harmful UV light, produces vitamin D, gives rise to hair, anils, glands

Question 3

Stratum corneum structure & function

Answer 3

Superficial stratum of epidermis; function –> structural strength (keraitin), prevents water loss (lipids surround), sloughs off superficial cells to resist abrasian

Question 4

Stratum lucidum

Answer 4

3-5 flayers of dead cells. Only present in thin skin. FUnciton > disperses kertohyalin around keratin fibers

Question 5

Stratum spinosum

Answer 5

8-10 layers of many sided cells; produes keratinfibers and lamellar bodies form inside the keratinocytes

Question 6

Stratum basale

Answer 6

deepest statum of epidermis. Single later of cuboidal or columnar cells. BM attaches to the dermis. Function > brin