1|Page
NSG 3280 EXAM 4 LATEST 2026-2027 ACTUAL EXAM WITH
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (100%
VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED|| ||BRANDNEW!!!||
A vessel that normally contains desaturated (venous) blood is the
a. bronchial artery.
b. pulmonary artery.
c. Pulmonary vein
d. Coronary artery - ANSWER-B. Pulmonary artery
During which phase of the cardiac cycle is the mitral valve
normally open?
a. Atrial systole
b. Isovolumic contraction
c. Isovolumic relaxation
d. Ventricular ejection - ANSWER-a. Atrial systole
,2|Page
The v wave of an atrial pressure tracing corresponds to:
a. atrial filling.
b. ventricular systole.
c. atrial systole.
d. mitral valve closure. - ANSWER-a. atrial filling
Which is true about blood flow from the atria?
a. Occurs primarily during systole, because perfusion pressure is
high
b. Is controlled primarily by the autonomic nervous system
c. Is increased with elevated right atrial pressure
d. Occurs primarily during ventricular diastole - ANSWER-d.
Occurs primarily during ventricular diastole
An increase in intracellular calcium ion results in myocardial
contraction because calcium:
,3|Page
a. activates membrane calcium pumps.
b. binds troponin, causing actin-binding sites to be exposed.
c. increases affinity of myosin for actin cross-bridge sites.
d. promotes ATP synthesis. - ANSWER-b. binds troponin, causing
actin-binding sites to be exposed.
While caring for a geriatric patient, the changes in the heart that
may be expected include:
a. increased oxygen consumption.
b. increased coronary artery blood flow.
c. decrease response to an elevated heart rate
d. cardiomyopathy. - ANSWER-c. decrease response to an
elevated heart rate
Creatine phosphate is:
a. a waste product of cellular metabolism.
b. synthesized when ATP levels are high.
, 4|Page
c. enzymatically degraded to form creatine kinase.
d. an indicator of myocardial cell damage. - ANSWER-b.
synthesized when ATP levels are high.
Phase 0 of the cardiac muscle cell action potential is associated
with:
a. opening of slow calcium ion
b. Opening of fast potassium ion
c. Opening of fast sodium ion
d. Closure of sodium leak - ANSWER-c. Opening of fast sodium
ion
Automatic pacemaker cells spontaneously depolarize because:
a. leak channels (If) allow calcium and sodium ions into the cell.
b. they lack efficient sodium/potassium pumps.
c. voltage-sensitive sodium channels open spontaneously.
NSG 3280 EXAM 4 LATEST 2026-2027 ACTUAL EXAM WITH
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (100%
VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED|| ||BRANDNEW!!!||
A vessel that normally contains desaturated (venous) blood is the
a. bronchial artery.
b. pulmonary artery.
c. Pulmonary vein
d. Coronary artery - ANSWER-B. Pulmonary artery
During which phase of the cardiac cycle is the mitral valve
normally open?
a. Atrial systole
b. Isovolumic contraction
c. Isovolumic relaxation
d. Ventricular ejection - ANSWER-a. Atrial systole
,2|Page
The v wave of an atrial pressure tracing corresponds to:
a. atrial filling.
b. ventricular systole.
c. atrial systole.
d. mitral valve closure. - ANSWER-a. atrial filling
Which is true about blood flow from the atria?
a. Occurs primarily during systole, because perfusion pressure is
high
b. Is controlled primarily by the autonomic nervous system
c. Is increased with elevated right atrial pressure
d. Occurs primarily during ventricular diastole - ANSWER-d.
Occurs primarily during ventricular diastole
An increase in intracellular calcium ion results in myocardial
contraction because calcium:
,3|Page
a. activates membrane calcium pumps.
b. binds troponin, causing actin-binding sites to be exposed.
c. increases affinity of myosin for actin cross-bridge sites.
d. promotes ATP synthesis. - ANSWER-b. binds troponin, causing
actin-binding sites to be exposed.
While caring for a geriatric patient, the changes in the heart that
may be expected include:
a. increased oxygen consumption.
b. increased coronary artery blood flow.
c. decrease response to an elevated heart rate
d. cardiomyopathy. - ANSWER-c. decrease response to an
elevated heart rate
Creatine phosphate is:
a. a waste product of cellular metabolism.
b. synthesized when ATP levels are high.
, 4|Page
c. enzymatically degraded to form creatine kinase.
d. an indicator of myocardial cell damage. - ANSWER-b.
synthesized when ATP levels are high.
Phase 0 of the cardiac muscle cell action potential is associated
with:
a. opening of slow calcium ion
b. Opening of fast potassium ion
c. Opening of fast sodium ion
d. Closure of sodium leak - ANSWER-c. Opening of fast sodium
ion
Automatic pacemaker cells spontaneously depolarize because:
a. leak channels (If) allow calcium and sodium ions into the cell.
b. they lack efficient sodium/potassium pumps.
c. voltage-sensitive sodium channels open spontaneously.
