BIOS251-EXAM 3(WEEK 5-INTEGUMENTARY) QUESTIONS WITH CORRECT ANSWERS 2026

BIOS251-EXAM 3(WEEK 5-INTEGUMENTARY) jk jk




QUESTIONS WITH CORRECT ANSWERS 2025
jk jk jk jk


structure jkof jk skin jk - jk CORRECT jk ANSWER jk -- jk epidermis
- dermis

- subcutaneous jklayer jk(hypodermis)



accessory jk structures jk - jk CORRECT jk ANSWER jk -- jk sweat jk glands

- oil jk (sebaceous) jk glands

- hair

- nails



functions jk of jk skin jk - jk CORRECT jk ANSWER jk -
1. protection: jkagainst jkdehydration jk& jkinfection jk(includes jkacid jkmantle, jkkeratin, jkantimicrobial jkpeptides)

2. synthesis jkof jkvitamin jkD: jk contributes jk to jk bones

3. sensation: jk skin jk is jk largest jksense jkorgan: jk tactile, jkthermal, jk pain

4. thermoregulation: jk regulating jk body jk temp jk in jkcold jk& jk hot jk environment, jk sweat jk& jkevaporation

5. nonverbal jkcommunication: jkexpressive jkfaces, jkgeneral jkappearance jkof jkskin/hair



what jkcells jkmake jk epidermis? jk - jkCORRECT jk ANSWER jk-1. jk stratified jk squamous jkepithelium

2. keratinocytes

3. melanocytes

4. langerhans jkcells

5. merkel jkcells



dermis jk - jk CORRECT jk ANSWER jk -- jk composed jk of jk collagen, jkelastic, jk and jk reticular jkfibers

- blood jk vessels jk & jk nerve jk endings, jk cutaneous jk glands, jk hair jk follicles, jk hair jk roots

- forms jk fingerprints

- cutaneous jkmembrane: jk dermis jk + jk epidermis

- dermal jk papilla

, - papillary jk layer

- reticular jklayer

- blisters



papillary jk layer jk - jk CORRECT jk ANSWER jk -most jk superficial jklayer jk of jk the jk dermis

- made jk of jk areolar j k tissue

- rich jk in jk blood jk supply



reticular jklayer jk- jkCORRECT jkANSWER jk-deeper, jkthicker jklayer jkof jkdermis

- dense jkirregular jktissue, jkcollagen jk & jkelastic jk fibers

- hair jk follicles, jk hair jk roots, jk nerve jkendings, jk cutaneous jk glands

- produces jk stretch jk marks jkdue jk to jk collagen jk fibers jktearing



blisters jk- jk CORRECT jk ANSWER jk -
form jk as jk a jk result jk of jk fluid jk seeping jk out jk of jk blood jk vessels, jk accumulating jk btw jk epidermis jk and jk dermis



subcutaneous jklayer jk(hypodermis) jk- jkCORRECT jkANSWER jk-
jkconsists jkof jkloose jkconnective jktissue jk(adipose, jkareolar)



- well-vascularized

- connects jk skin jk to jk fascia jk beneath jk it

- provides jkinsulation, jkstores jkfat



keratinocytes jk - jkCORRECT jkANSWER jk -- jk 90% jkof jk epidermal jk cells

- produce jkkeratin-toughens jkand jkprotects jkskin

- produces jkgranules jkfor jkwater-proofing, jkprevents jkentry jkof jkpathogens



melanocytes jk - jk CORRECT jkANSWER jk -- jk produce jkmelanin jk pigment

- stratum jkbasale

- long jkslender jkprojections jkconnect jkw jkkeratinocytes, jkmelanin jkshuttled jkthere