ATI RN
Cardiovascular System Anatomy Questions and Answers Questions
Question 1 of 5
The most plentiful plasma protein is:
Correct Answer: A
Rationale: Albumins (~60% of plasma proteins) are the most abundant, maintaining osmotic pressure. Globulins (~35%) and fibrinogen (~4%) are less plentiful. ‘Hemogen’ is not a recognized term.
Question 2 of 5
In the heart, valves that ensure one-way flow of blood are found:
Correct Answer: D
Rationale: Valves ensure one-way flow at two key locations: atrioventricular (AV) valves (A) between atria and ventricles (tricuspid, mitral), and semilunar valves (B) between ventricles and arteries (pulmonary, aortic). No valves exist between vena cavae and atria (C), so D (A and B) is correct.
Question 3 of 5
The chamber of the heart that receives oxygen poor blood from the body is the
Correct Answer: B
Rationale: The right atrium (B) receives oxygen-poor blood from the body via the venae cavae and coronary sinus. The left atrium (A) receives oxygen-rich blood from lungs, and ventricles (C, D) pump blood out, not receive it directly from the body.
Question 4 of 5
List the components of the cardiac conduction system in the correct sequence for impulse transmission.
Correct Answer: C
Rationale: The conduction sequence is: SA node (pacemaker), AV node (delay), AV bundle (His), bundle branches, Purkinje fibers (C). A, B, and D misorder the sequence.
Question 5 of 5
The volume of blood pumped by a ventricle per minute is the
Correct Answer: A
Rationale: Cardiac output (A) is the volume pumped per minute (CO = HR × SV, ~5 L/min). Stroke volume (B) is per beat, C/D are not standard terms.