ATI RN
Cardiovascular System Quiz Questions Questions
Question 1 of 5
Frank Starlings law states that if more blood enters the heart,
Correct Answer: B
Rationale: Frank-Starling’s law states that increased preload (more blood) stretches cardiac muscle, leading to a stronger contraction (B) and greater stroke volume. A, C, D contradict this.
Question 2 of 5
Identify the hormone(s) that will increase blood volume and thus blood pressure.
Correct Answer: B
Rationale: ADH (antidiuretic hormone) and aldosterone (B) increase blood volume (water retention, sodium reabsorption), raising BP. ANH (C, atrial natriuretic hormone) decreases it.
Question 3 of 5
What vessels deliver oxygen rich blood to the legs?
Correct Answer: A
Rationale: External iliac arteries (A) deliver oxygen-rich blood to the legs from the common iliacs. Internal iliac veins (B) drain, inferior vena cava (C) returns to heart, hepatic portal (D) is digestive.
Question 4 of 5
The two major opening of the left ventricle are:
Correct Answer: C
Rationale: The left ventricle has the bicuspid (mitral) valve (inflow from left atrium) and aortic valve (outflow to aorta, C). Pulmonary veins (A) enter the atrium, tricuspid (B) is right-sided, and inferior vena cava (D) enters the right atrium.
Question 5 of 5
Blood pressure is higher in:
Correct Answer: D
Rationale: Blood pressure increases with age due to arterial stiffening, peaking in the elderly (D, ~130-140/80 mmHg). Infants (A, ~90/60), adolescents (B, ~110/70), and adults (C, ~120/80) have lower values.