Exam 2: BIO 201/ BIO201 (NEW 2025/ 2026 Update) Human Anatomy and Physiology I Guide| Questions & Answers| Grade A| 100% Correct (Verified Solutions)- GCU

Examl 2:l BIOl 201/l BIO201l (NEWl 2025/l
2026l Update)l Humanl Anatomyl andl
Physiologyl Il Guide|l Questionsl &l
Answers|l Gradel A|l 100%l Correctl
(Verifiedl Solutions)-l GCU

QUESTION
Skinl functions

Answer:
Protection,l templ regulation,l excretion,l sensation,l vitaminl dl synthesis.



QUESTION
Epidermis

Answer:
outermostl layerl ofl skin



QUESTION
Stratuml germinativuml (basale)

Answer:
formsl al strongl bondl betweenl epidermisl andl dermis.



QUESTION
stratuml spinosum

Answer:
al layerl ofl thel epidermisl thatl providesl strengthl andl flexibilityl tol thel skin.l 2ndl layerl ofl
epidermis

,QUESTION
stratuml granulosum

Answer:
al layerl ofl thel epidermisl thatl marksl thel transitionl betweenl thel deeper,l metabolicallyl
activel stratal andl thel deadl cellsl ofl thel morel superficiall strata.l 3rdl layerl ofl epidermis



QUESTION
stratuml lucidum

Answer:
Clear,l transparentl layerl ofl thel epidermisl underl thel stratuml corneum.l 4thl layerl ofl
epidermis



QUESTION
stratuml corneum

Answer:
thel mostl superficiall layerl ofl thel epidermisl consistingl ofl deadl cells.l 5thl layerl ofl
epidermis



QUESTION
Keratinization

Answer:
Processl byl whichl newlyl formedl cellsl inl thel hairl bulbl mature,l filll withl keratin,l movel
upward,l losel theirl nucleus,l andl die.



QUESTION
Dermis

Answer:
Innerl layerl ofl skin

,QUESTION
papillaryl layer

Answer:
highlyl vascularized,l bordersl thel stratuml basalel andl hasl touch/painl receptors.



QUESTION
reticularl layer

Answer:
Deeperl layerl ofl thel dermisl thatl suppliesl thel skinl withl oxygenl andl nutrients



QUESTION
blister

Answer:
thel separationl ofl thel epidermall andl dermall layersl byl al fluid-filledl pocket



QUESTION
Hypodermis

Answer:
Asol calledl al subcutaneousl layer,l thisl isl al layerl ofl *fatl locatedl underl thel dermisl ofl thel
skin.l Thel hypodermisl helpsl tol insulatel thel bodyl andl protectsl underlyingl musclesl andl
otherl structures.



QUESTION
Melanin

Answer:
Al pigmentl thatl givesl thel skinl itsl color



QUESTION
Pheomelanin

, Answer:
Producesl yellowl tol redl pigmentsl inl thel hair



QUESTION
Carotene

Answer:
yellow-orangel pigmentl thatl accumulatesl inl stratuml corneuml andl inl adiposel tissuel ofl
hypodermis.



QUESTION
Hemogoblin

Answer:
al redl proteinl responsiblel forl transportingl oxygenl inl thel bloodl ofl vertebrates.



QUESTION
arrectorl pili

Answer:
al smoothl musclel attachedl tol hairl folliclesl thatl causesl "goosel bumps"l tol appearl onl thel
skinl whenl contracted



QUESTION
vellusl hair

Answer:
"peachl fuzz"l mostlyl withl childrenl beforel pubertyl andl women.



QUESTION
terminall hair

Answer:
Long,l coarse,l pigmentedl hairl foundl onl thel scalp,l legs,l arms,l andl bodiesl ofl malesl andl
females.