ATI RN
Cardiovascular System Anatomy Questions and Answers Questions
Question 1 of 5
The migration of white blood cells out of the blood vessels and into the tissue spaces
Correct Answer: B
Rationale: Emigration (B) is WBC exit from vessels.
Question 2 of 5
Nervi vasorum control
Correct Answer: D
Rationale: Nervi vasorum are nerves in vessel walls regulating smooth muscle, controlling both vasoconstriction (A) and vasodilation (B), thus (D). Capillary permeability (C) is not nerve-controlled.
Question 3 of 5
The coronary arteries branch off of the
Correct Answer: B
Rationale: Coronary arteries arise from the ascending aorta (B), just above the aortic valve, supplying the heart.
Question 4 of 5
Which of the following is unique to cardiac muscle cells?
Correct Answer: C
Rationale: Autorhythmicity (C) is unique to cardiac muscle (pacemaker cells). Sarcoplasmic reticulum (A), gap junctions (B), and mitochondria (D) exist in other muscles too.
Question 5 of 5
Of the three germ layers that give rise to all adult tissues and organs, which gives rise to the heart?
Correct Answer: C
Rationale: The mesoderm (C) forms the heart and circulatory system during embryogenesis.