ATI RN
Cardiovascular System Questions and Answers Quizlet Questions
Question 1 of 5
Which of the following would cause blood pressure to decrease?
Correct Answer: D
Rationale: Atrial natriuretic factor (ANF, D) decreases BP by promoting vasodilation and sodium/water excretion. A, B, C increase BP.
Question 2 of 5
Chordae tendinae is found in:
Correct Answer: D
Rationale: Chordae tendineae (D) are in the heart’s ventricles, anchoring AV valves to papillary muscles. Auricles (A) are atrial appendages, brain ventricles (B) are unrelated, and sinus venosus (C) is embryonic.
Question 3 of 5
Which of the following procedures is used to assess the human blood vessel?
Correct Answer: A
Rationale: Angiography (A) visualizes blood vessels using contrast dye. Tomography (B) is general imaging, venography (C) is vein-specific (less broad), and electromyography (D) assesses muscles.
Question 4 of 5
Minimum blood Pressure is in:
Correct Answer: D
Rationale: Venules (D) have low pressure (~10-15 mmHg) post-capillary. Aorta (A, ~100 mmHg), arteries (B, ~80-100 mmHg), and capillaries (C, ~20 mmHg) are higher.
Question 5 of 5
Cardiac cycle duration in man is:
Correct Answer: B
Rationale: At 75 bpm, the cardiac cycle is ~0.8 s (B, 60/75). A is too short, C and D too long for normal rates.