APEX ACTUAL FINAL EXAM | WITH COMPLETE QUESTIONS AND
ANSWERS | 2025/2026 LATEST UPDATED | 100 % RATED AND
VERIFIED SOLUTIONS | GET AN A+
APEX CARDIAC A&P:
Identify the statements that best describe ventricular myocytes (select 3)
A. Hypokalemia decreases resting membrane potential
B. T-tubules spread the wave of depoalrization throughout the myocardium
C. Resting membrane potential is -90 mV
D. Hyperkalemia increases threshold potential
E. The contain more mitochondria than skeletal myocytes
F. Sodium conductance is greater than potassium conductance at rest - (ANSWER)A.
Hypokalemia decreases resting membrane potential
E. The contain more mitochondria than skeletal myocytes
C. Resting membrane potential is -90 mV
APEX CARDIAC A&P:
,Click on the region of the ventricular action potential where calcium conductance is the greatest
PICTURE - (ANSWER)
APEX CARDIAC A&P:
Which current is responsible for the slow phase four depolarization in the SA node?
A. I-Na
B. I-Ca
C. I-f
D. I-K - (ANSWER)C. I-f
APEX CARDIAC A&P:
What is the normal oxygen delivery in a 70kg adult?
A. 1000 mL/min
,B. 250 mL/min
C. 15 mL/min
D. 20 mL/min - (ANSWER)A. 1000 mL/min
APEX CARDIAC A&P:
Blood flow is inversely proportional to:
A. Vessel diameter
B. Body temperature
C. Hematocrit
D. Arteriovenous pressure difference - (ANSWER)C. Hematocrit
APEX CARDIAC A&P:
Match each hemodynamic variable with its mathematical equation
A. Ejection fraction
, B. Mean arterial blood pressure
C. Stroke volume
D. Systemic vascular resistance
[(MAP - CVP) / CO] x 80
[(CO x SVR) / 80] + CVP
[(EDV - ESV) / EDV] x 100
CO x (1000 / HR) - (ANSWER)A. Ejection fraction = [(EDV - ESV) / EDV] x 100
B. Mean arterial blood pressure = [(CO x SVR) / 80] + CVP
C. Stroke volume = CO x (1000 / HR)
D. Systemic vascular resistance = [(MAP - CVP) / CO] x 80
APEX CARDIAC A&P:
Which conditions impair myocardial contractility?
ANSWERS | 2025/2026 LATEST UPDATED | 100 % RATED AND
VERIFIED SOLUTIONS | GET AN A+
APEX CARDIAC A&P:
Identify the statements that best describe ventricular myocytes (select 3)
A. Hypokalemia decreases resting membrane potential
B. T-tubules spread the wave of depoalrization throughout the myocardium
C. Resting membrane potential is -90 mV
D. Hyperkalemia increases threshold potential
E. The contain more mitochondria than skeletal myocytes
F. Sodium conductance is greater than potassium conductance at rest - (ANSWER)A.
Hypokalemia decreases resting membrane potential
E. The contain more mitochondria than skeletal myocytes
C. Resting membrane potential is -90 mV
APEX CARDIAC A&P:
,Click on the region of the ventricular action potential where calcium conductance is the greatest
PICTURE - (ANSWER)
APEX CARDIAC A&P:
Which current is responsible for the slow phase four depolarization in the SA node?
A. I-Na
B. I-Ca
C. I-f
D. I-K - (ANSWER)C. I-f
APEX CARDIAC A&P:
What is the normal oxygen delivery in a 70kg adult?
A. 1000 mL/min
,B. 250 mL/min
C. 15 mL/min
D. 20 mL/min - (ANSWER)A. 1000 mL/min
APEX CARDIAC A&P:
Blood flow is inversely proportional to:
A. Vessel diameter
B. Body temperature
C. Hematocrit
D. Arteriovenous pressure difference - (ANSWER)C. Hematocrit
APEX CARDIAC A&P:
Match each hemodynamic variable with its mathematical equation
A. Ejection fraction
, B. Mean arterial blood pressure
C. Stroke volume
D. Systemic vascular resistance
[(MAP - CVP) / CO] x 80
[(CO x SVR) / 80] + CVP
[(EDV - ESV) / EDV] x 100
CO x (1000 / HR) - (ANSWER)A. Ejection fraction = [(EDV - ESV) / EDV] x 100
B. Mean arterial blood pressure = [(CO x SVR) / 80] + CVP
C. Stroke volume = CO x (1000 / HR)
D. Systemic vascular resistance = [(MAP - CVP) / CO] x 80
APEX CARDIAC A&P:
Which conditions impair myocardial contractility?
