NURS221 Quiz 2 | COMPLETE AND DETAILED QUESTIONS AND
ANSWERS | REAL EXAM QNA | 2025 LATEST UPDATED 100% RATED
CORRECT | 100% VERFIED | ALREADY GRADED A+|GUARANTEED
TO PASS!!
what muscles does ventilation use? - (answer)- intercostal
- diaphragm
- sternocleidomastoid
what is inspiration? - (answer)acquiring oxygen
what is expiration? - (answer)removing CO2
what are the 2 parts of ventilation? - (answer)- inspiration
- expiration
what percent of room air is oxygen? - (answer)21%
what direction does air move during inspiration? - (answer)unidirectional from high pressure to
low pressure
,why does the chest cavity size change during inspiration? - (answer)to alter the pressure gradient
what muscles relax during expiration? - (answer)diaphragm & intercostals
what is ventilation? - (answer)movement of air in and out of the lungs
what is diffusion? - (answer)oxygen and carbon dioxide exchange at the alveolar capillary
junctions
what 2 major processes occur during diffusion? - (answer)- oxygen tries to get into cells
- CO2 tries to escape lungs
what mechanisms alter diffusion? - (answer)- inc thickness of ACJ
- dec SA of ACJ
- dec partial pressure
- dec solubility
,what happens during impaired diffusion? - (answer)blocked transfer of O2 to circulation and
CO2 to atmosphere
what issues in the body can alter diffusion by inc the thickness of the ACJ & dec the usable SA?
- (answer)- emphysema
- fibrosis
- infection
- edema
what issues in the body can alter diffusion by dec partial pressure & solubility? - (answer)- high
altitude
- hypothermia
- O2 deprivation
what is partial pressure? - (answer)the pressure when oxygen and CO2 collide
what are HbO2 (oxyhemoglobin)? - (answer)oxygen binded to RBC
, what is the diffusing capacity? - (answer)measure of carbon monoxide, oxygen, or nitric oxide
transfer from inspired gas --> pulmonary capillary blood
what is the volume of gas that diffuses through the alveolar capillary membrane each min? -
(answer)diffusing capacity
what happens during impaired ventilation? - (answer)blocking airflow in and out of the lungs
what 2 mechanisms alter ventilation? - (answer)- narrowing of airways
- inhibited neural stimulation & mechanics of breathing
what issues in the body can alter ventilation by obstructing airflow? - (answer)-
bronchoconstriction
- suffocation
what issues in the body can alter ventilation by inhibiting neural stimulation and mechanics of
breathing? - (answer)- drug OD
- cervical nerve damage
ANSWERS | REAL EXAM QNA | 2025 LATEST UPDATED 100% RATED
CORRECT | 100% VERFIED | ALREADY GRADED A+|GUARANTEED
TO PASS!!
what muscles does ventilation use? - (answer)- intercostal
- diaphragm
- sternocleidomastoid
what is inspiration? - (answer)acquiring oxygen
what is expiration? - (answer)removing CO2
what are the 2 parts of ventilation? - (answer)- inspiration
- expiration
what percent of room air is oxygen? - (answer)21%
what direction does air move during inspiration? - (answer)unidirectional from high pressure to
low pressure
,why does the chest cavity size change during inspiration? - (answer)to alter the pressure gradient
what muscles relax during expiration? - (answer)diaphragm & intercostals
what is ventilation? - (answer)movement of air in and out of the lungs
what is diffusion? - (answer)oxygen and carbon dioxide exchange at the alveolar capillary
junctions
what 2 major processes occur during diffusion? - (answer)- oxygen tries to get into cells
- CO2 tries to escape lungs
what mechanisms alter diffusion? - (answer)- inc thickness of ACJ
- dec SA of ACJ
- dec partial pressure
- dec solubility
,what happens during impaired diffusion? - (answer)blocked transfer of O2 to circulation and
CO2 to atmosphere
what issues in the body can alter diffusion by inc the thickness of the ACJ & dec the usable SA?
- (answer)- emphysema
- fibrosis
- infection
- edema
what issues in the body can alter diffusion by dec partial pressure & solubility? - (answer)- high
altitude
- hypothermia
- O2 deprivation
what is partial pressure? - (answer)the pressure when oxygen and CO2 collide
what are HbO2 (oxyhemoglobin)? - (answer)oxygen binded to RBC
, what is the diffusing capacity? - (answer)measure of carbon monoxide, oxygen, or nitric oxide
transfer from inspired gas --> pulmonary capillary blood
what is the volume of gas that diffuses through the alveolar capillary membrane each min? -
(answer)diffusing capacity
what happens during impaired ventilation? - (answer)blocking airflow in and out of the lungs
what 2 mechanisms alter ventilation? - (answer)- narrowing of airways
- inhibited neural stimulation & mechanics of breathing
what issues in the body can alter ventilation by obstructing airflow? - (answer)-
bronchoconstriction
- suffocation
what issues in the body can alter ventilation by inhibiting neural stimulation and mechanics of
breathing? - (answer)- drug OD
- cervical nerve damage
