Exam 3: BIO 202/ BIO202 (NEW 2025/ 2026 Update) Human Anatomy and Physiology II Review| Questions & Answers| Grade A| 100% Correct (Verified Solutions)- GCU

Examl 3:l BIOl 202/l BIO202l (NEWl 2025/l
2026l Update)l Humanl Anatomyl andl
Physiologyl IIl Review|l Questionsl &l
Answers|l Gradel A|l 100%l Correctl
(Verifiedl Solutions)-l GCU

QUESTION
Whatl isl Asthma?

Answer:
Chronicl inflamedl hypersensitivel smoothl musclel inl bronchiolel passagesl -l responsel tol
irritantsl producesl excessl mucusl inl bronchiolesl -l albuteroll (bindsl tol Betal 2l receptors,l
stimulatingl al sympatheticl responsel causingl bronchodilation,l alsol somel bindingl tol Betal 1l
receptorsl inl thel heartl resultingl inl increasedl HR

QUESTION
Whatl isl alveolil typel Il Pneumocytes?

Answer:
Comprisel thel alveolil -l tiny,l moist,l multi-lobedl airl sacsl madel ofl simplel squamousl cellsl -
l thinl walll allowsl airl exchangel withl thin-walledl capillariesl ofl circulatoryl system

QUESTION
Whatl isl alveolil typel IIl Pneumocytes?

Answer:
Producesl surfactantl (decreasesl surfacel tensionl inl thel alveoli)l -l prematurel infantsl thatl
lackl surfactantl canl sufferl froml respiratoryl distressl syndrome

QUESTION
Whatl isl rolel ofl surfactant?

Answer:
Tol decreasel surfacel tension

,QUESTION
Whatl isl thel respiratoryl membrane?

Answer:
Thel thinl membranel ofl alveolil wherel gasl exchangel takesl place

QUESTION
Whatl arel thel layersl ofl thel respiratoryl membrane?

Answer:
Squamousl epitheliall cellsl liningl thel alveolus,l Endotheliall cellsl liningl anl adjacentl
capillary,l Fusedl basementl membranesl betweenl thel alveolarl andl endotheliall cells

QUESTION
Whatl isl Fick'sl Lawl ofl Diffusion

Answer:
Ratel =l SAl timesl differencel inl concentrationl overl distance

QUESTION
Diffusionl acrossl thel respiratoryl membranel isl rapid?

Answer:
True

QUESTION
Whyl isl thel diffusionl rapid?

Answer:
Distancel isl short,l gasesl arel lipidl soluble

QUESTION
Whatl isl pneumonia?

Answer:
Inflammationl ofl Lobules,l causesl fluidl tol leakl intol alveolil andl compromisesl functionl ofl
respiratoryl membrane,l alveolil fillsl withl bacteria,l fluidsl andl mucusl resultingl inl coughingl
andl breathingl difficulties

,QUESTION
Whatl isl pleura?

Answer:
Doublel walledl membrane

QUESTION
Whatl componentsl isl therel inl pleura?

Answer:
Viscerall layerl andl parietall layer

QUESTION
Whatl isl thel viscerall layer?

Answer:
Covers,l protectsl andl cushionsl lungs

QUESTION
Whatl isl thel parietall layer?

Answer:
Linesl thel insidel ofl thel thoracicl cavity

QUESTION
Whatl isl thel pleurall space?

Answer:
Isl al potentiall space

QUESTION
Whatl isl thel pleurall fluid?

Answer:
Lubricatesl spacel betweenl twol layers

QUESTION
Whatl isl thel componentsl ofl thel respiratoryl system?

, Answer:
Pulmonaryl ventilationl andl Externall respiration

QUESTION
Whatl isl thel componentsl ofl thel circulatoryl system?

Answer:
Transportl ofl respiratoryl gasesl andl Internall respiration

QUESTION
Whatl isl pulmonaryl ventilationl ofl thel respiratoryl system?

Answer:
Movementl ofl airl intol andl outl ofl lungs

QUESTION
Whatl isl externall respirationl ofl thel respiratoryl system?

Answer:
O2l andl CO2l gasl exchangel betweenl lungl capillariesl andl alveolil inl thel lungs

QUESTION
Whatl isl transportl ofl respiratoryl gasesl ofl thel circulatoryl system?

Answer:
O2l andl CO2l transportl ofl gasesl betweenl lungsl andl thel tissues/cellsl ofl thel restl ofl thel
body

QUESTION
Whatl isl internall respirationl ofl thel circulatoryl system?

Answer:
O2l andl CO2l gasl exchangel betweenl systemicl bloodl andl tissues/cells

QUESTION
Whatl isl Boyle'sl Law?

Answer:
Anl inversel relationshipl betweenl pressurel andl volume