ATI RN
Cardiovascular System Questions and Answers Quizlet Questions
Question 1 of 5
Which one of the heart sounds heard in elderly and pathologic in the young?
Correct Answer: D
Rationale: The fourth heart sound (D, S₄) is normal in the elderly (stiff ventricle) but pathologic in the young (e.g., heart failure). S₃ (C) is the reverse.
Question 2 of 5
During heart transplants, the nerves are severed resulting in a faster resting heart rate (approximately 100 beats per minute) after the transplant.
Correct Answer: C
Rationale: Severing the vagus nerve (C) removes parasympathetic slowing, raising resting heart rate to SA node’s intrinsic ~100 bpm.
Question 3 of 5
Valve that opens into the right ventricle
Correct Answer: A
Rationale: The tricuspid valve (A) opens into the right ventricle from the right atrium during diastole. Pulmonary (B) is outflow, mitral (C) and aortic (D) are left-sided.
Question 4 of 5
The instrument that is used to measure blood pressure
Correct Answer: C
Rationale: A sphygmomanometer (C) measures blood pressure with a cuff and gauge. Stethoscope (A) aids listening, ECG (B) records electrical activity, oximeter (D) measures oxygen.
Question 5 of 5
The process by which the formed elements of the blood develop is called
Correct Answer: B
Rationale: Hemopoiesis (B) is blood cell formation in bone marrow. Hematospermia (A) is blood in semen, thrombocytosis (C) is excess platelets, hemostasis (D) is clotting.