ATI RN
Cardiovascular System Quiz Questions Questions
Question 1 of 5
The T wave on an ECG (EKG) represents:
Correct Answer: D
Rationale: The T wave (D) represents ventricular repolarization. Atrial depolarization is P wave (A), atrial repolarization is obscured by QRS, and ventricular depolarization is QRS (C).
Question 2 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: Hydrostatic blood pressure (~35 mmHg) at the arterial end (A) forces water and nutrients out via filtration. Osmotic pressure (B) pulls water back, diffusion (C) moves gases, and active transport (D) is minimal here.
Question 3 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 4 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 5 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.