ATI RN
Cardiovascular System Anatomy Questions and Answers Questions
Question 1 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 2 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 3 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.
Question 4 of 5
Another name for the right AV valve
Correct Answer: B
Rationale: The right AV valve is the tricuspid valve (B). Mitral (A) is left AV, aortic (C) and pulmonary (D) are semilunar.
Question 5 of 5
Which of the following is NOT a major function of the blood?
Correct Answer: D
Rationale: Blood transports oxygen (A), regulates pH (B), and protects against disease (C), but does not produce oxygen (D); that occurs in the lungs.