ATI RN
Cardiovascular System Anatomy Questions and Answers Questions
Question 1 of 5
Hepatic portal system originates from:
Correct Answer: D
Rationale: The hepatic portal system originates from the gut (D, intestines/stomach), carrying nutrient-rich blood to the liver. Liver (A) is the destination, kidney (B) is unrelated, and capillaries (C) are too general.
Question 2 of 5
In determining blood pressure by auscultatory method the first sound indicates:
Correct Answer: C
Rationale: The first Korotkoff sound (C) marks systolic pressure (~120 mmHg) as the cuff pressure drops below arterial peak. A is last sound, B and D are incorrect.
Question 3 of 5
Contraction of the atria of the heart leads to blood moving directly
Correct Answer: D
Rationale: Atrial contraction pushes blood through atrioventricular valves (D, tricuspid and mitral) into ventricles. Auricles (A) are atrial extensions, arteries (B) and veins (C) are not directly involved.
Question 4 of 5
Which wave in an electrocardiogram represents repolarization of the ventricles?
Correct Answer: B
Rationale: The T wave (B) shows ventricular repolarization. P wave (D) is atrial depolarization, QRS (R, S) is ventricular depolarization.
Question 5 of 5
Heart chamber that pushes blood through the right atrioventricular valve when it contracts
Correct Answer: A
Rationale: The right atrium (A) contracts to push blood through the right AV valve (tricuspid) into the right ventricle during atrial systole. Ventricles (B, D) pump out, left atrium (C) serves the mitral valve.