NUR 111(PERFUSION, PHYSICAL ASSESSMENT ) EXAM 2
QUESTIONS AND ANSWERS ELABORATION!!
Ventilation
Answers :movement of air in and out of the lungs
(expiration and inspiration)
Experation
Answers :breathing out
inspiration
Answers :breathing in
Compliance
Answers :the ability of the lungs to distend or expand in response to increased
intraalveolar pressure
airway resistance
Answers :the increase in pressure that occurs as the diameter of the airways
decreases from mouth/nose to alveoli
residual volume
Answers :Amount of air remaining in the lungs after a forced exhalation
vital capacity
Answers :the maximum amount of air that can be exhaled after a maximum
inhalation
,pulmonary circulation
Answers :moves blood to and from the lungs during alveolar gas exchange
Difussion
Answers :movement from an area of higher concentration to an area of lower
concentration (occurs at alveoli capillary membrane)
oxygen transport system
Answers :consists of the lungs and cardiovascular system
3 things influencing the capacity of blood to carry oxygen
Answers :amount of dissolved oxygen in plasma, amount of hemoglobin, ability of
hemoglobin to bind with oxygen
Stroke Volume
Answers :The amount of blood ejected each heartbeat
cardiac output
Answers :amount of blood pumped by each ventricle in one minute
- If HR increases so does the cardiac output
- provides more energy to the muscles
Afterload
Answers :how much pressure it takes to open valves
How does blood flow through the unoxygentated side of the heart?
, Answers :SVC/ IVC -> RA -> tricuspid -> RV -> pulmonary valve-> pulmonary
artery -> lungs
How does blood flow through the oxygenated side of the heart?
Answers :lungs -> pulmonary veins -> LA -> mitral valve -> LV -> Aortic Valve -
> Aorta
systolic pressure
Answers :Blood pressure in the arteries during contraction of the ventricles
- The most pressure that the heart will exert to open the lungs
diastolic pressure
Answers :the pressure in the arteries when the heart is at rest
- The least about of pressure that the heart exerts
S1
Answers :first heart sound
- Atria and Vent close
S2
Answers :aortic and pulmonic valves close
Explain the route of an action potential
Answers :Action potential -> SA node -> AV node -> Bundle of His -> purkinje
Fibers -> Ventricle of the heart
QUESTIONS AND ANSWERS ELABORATION!!
Ventilation
Answers :movement of air in and out of the lungs
(expiration and inspiration)
Experation
Answers :breathing out
inspiration
Answers :breathing in
Compliance
Answers :the ability of the lungs to distend or expand in response to increased
intraalveolar pressure
airway resistance
Answers :the increase in pressure that occurs as the diameter of the airways
decreases from mouth/nose to alveoli
residual volume
Answers :Amount of air remaining in the lungs after a forced exhalation
vital capacity
Answers :the maximum amount of air that can be exhaled after a maximum
inhalation
,pulmonary circulation
Answers :moves blood to and from the lungs during alveolar gas exchange
Difussion
Answers :movement from an area of higher concentration to an area of lower
concentration (occurs at alveoli capillary membrane)
oxygen transport system
Answers :consists of the lungs and cardiovascular system
3 things influencing the capacity of blood to carry oxygen
Answers :amount of dissolved oxygen in plasma, amount of hemoglobin, ability of
hemoglobin to bind with oxygen
Stroke Volume
Answers :The amount of blood ejected each heartbeat
cardiac output
Answers :amount of blood pumped by each ventricle in one minute
- If HR increases so does the cardiac output
- provides more energy to the muscles
Afterload
Answers :how much pressure it takes to open valves
How does blood flow through the unoxygentated side of the heart?
, Answers :SVC/ IVC -> RA -> tricuspid -> RV -> pulmonary valve-> pulmonary
artery -> lungs
How does blood flow through the oxygenated side of the heart?
Answers :lungs -> pulmonary veins -> LA -> mitral valve -> LV -> Aortic Valve -
> Aorta
systolic pressure
Answers :Blood pressure in the arteries during contraction of the ventricles
- The most pressure that the heart will exert to open the lungs
diastolic pressure
Answers :the pressure in the arteries when the heart is at rest
- The least about of pressure that the heart exerts
S1
Answers :first heart sound
- Atria and Vent close
S2
Answers :aortic and pulmonic valves close
Explain the route of an action potential
Answers :Action potential -> SA node -> AV node -> Bundle of His -> purkinje
Fibers -> Ventricle of the heart
