BIOS251 CHAP 6, 7, 8, & 9 EXAM
QUESTIONS WITH CORRECT ANSWERS
2026-2027
what are the 5 functions of the integumentary system - CORRECT ANSWER -1. protection
2. synthesis of vitamin D
3. sensation
4. thermoregulation
5. non-verbal communication
5 layers of the epidermis - CORRECT ANSWER -1. stratum corneum (most superficial)
2. stratum lucidum (only thick skin)
3. stratum granulosum
4. stratum spinosum
5. stratum basale (deepest)
description of epidermis - CORRECT ANSWER -*most superficial layer of skin
*avascular
*composed of keratinized stratified squamous epithelial tissue
what are the 4 cell types of the epidermis - CORRECT ANSWER -*keratinocytes
*melanocytes
*langerhans cells
*merkel cells
description of dermis - CORRECT ANSWER -*has 2 layers-
papillary layer (areolar tissue), and reticular layer (dense irregular tissue)
*well vascularized
, description of hypodermis - CORRECT ANSWER -*made of adipose tissue
*connects skin to fascia underneath
*provides insulation and stores fat
list the 4 glands in the skin and their secretions - CORRECT ANSWER -1. sweat glands- secrete sweat
2. sebaceous glands- secrete oily sebum
3. mammary glands- secrete milk
4. ceruminous glands- secrete cerumen (earwax)
what are the 2 kinds of sweat glands in your skin - CORRECT ANSWER -1. eccrine sweat glands-
*all over body, abundant in palms, soles and forehead
*cool down the body
2. apocrine sweat glands-
*found in axilla, groin, and anal region
*responds to stress and sexual stimulation (thicker, milkier sweat than eccrine)
function of melanocytes - CORRECT ANSWER -
produce the melanin that protects skin and tissues from sun damage
function of keratinocytes - CORRECT ANSWER -*produce keratin
*waterproofs the skin
function of langerhans cells - CORRECT ANSWER -immune cells
function of merkel cells - CORRECT ANSWER -sensation cells that act as receptors for touch
3 parts of hair - CORRECT ANSWER -1. hair bulb- live part of hair at base of root
2. hair shaft or root- part of hair below the skin
3. hair shaft- part of hair above the skin
QUESTIONS WITH CORRECT ANSWERS
2026-2027
what are the 5 functions of the integumentary system - CORRECT ANSWER -1. protection
2. synthesis of vitamin D
3. sensation
4. thermoregulation
5. non-verbal communication
5 layers of the epidermis - CORRECT ANSWER -1. stratum corneum (most superficial)
2. stratum lucidum (only thick skin)
3. stratum granulosum
4. stratum spinosum
5. stratum basale (deepest)
description of epidermis - CORRECT ANSWER -*most superficial layer of skin
*avascular
*composed of keratinized stratified squamous epithelial tissue
what are the 4 cell types of the epidermis - CORRECT ANSWER -*keratinocytes
*melanocytes
*langerhans cells
*merkel cells
description of dermis - CORRECT ANSWER -*has 2 layers-
papillary layer (areolar tissue), and reticular layer (dense irregular tissue)
*well vascularized
, description of hypodermis - CORRECT ANSWER -*made of adipose tissue
*connects skin to fascia underneath
*provides insulation and stores fat
list the 4 glands in the skin and their secretions - CORRECT ANSWER -1. sweat glands- secrete sweat
2. sebaceous glands- secrete oily sebum
3. mammary glands- secrete milk
4. ceruminous glands- secrete cerumen (earwax)
what are the 2 kinds of sweat glands in your skin - CORRECT ANSWER -1. eccrine sweat glands-
*all over body, abundant in palms, soles and forehead
*cool down the body
2. apocrine sweat glands-
*found in axilla, groin, and anal region
*responds to stress and sexual stimulation (thicker, milkier sweat than eccrine)
function of melanocytes - CORRECT ANSWER -
produce the melanin that protects skin and tissues from sun damage
function of keratinocytes - CORRECT ANSWER -*produce keratin
*waterproofs the skin
function of langerhans cells - CORRECT ANSWER -immune cells
function of merkel cells - CORRECT ANSWER -sensation cells that act as receptors for touch
3 parts of hair - CORRECT ANSWER -1. hair bulb- live part of hair at base of root
2. hair shaft or root- part of hair below the skin
3. hair shaft- part of hair above the skin
