ATI LPN
Cardiovascular Disease NCLEX Questions Questions
Question 1 of 5
During exercise:
Correct Answer: D
Rationale: During intense exercise, oxygen consumption of skeletal muscles can increase up to 100-fold.
Question 2 of 5
Which of the following events is the first to take place in a cardiac cycle?
Correct Answer: A
Rationale: Depolarization of the SA node initiates the cardiac cycle by triggering atrial contraction.
Question 3 of 5
Identify the vessel that carries blood to the left atrium.
Correct Answer: C
Rationale: The pulmonary veins carry oxygenated blood from the lungs to the left atrium.
Question 4 of 5
During ventricular systole, the atria are______, the ventricles are_______, the AV valves are______ and the SL valves are_____.
Correct Answer: C
Rationale: During ventricular systole, the atria relax (diastole) while the ventricles contract. The increased pressure in the ventricles causes the atrioventricular (AV) valves to close and the semilunar (SL) valves to open, allowing blood to be ejected into the arteries.
Question 5 of 5
Identify the factor that accounts for the movement of water and dissolved nutrients out of the arterial end of a capillary.
Correct Answer: A
Rationale: Blood pressure at the arterial end of capillaries forces water and dissolved nutrients out into the tissues.