ATI RN
100 Questions on the Cardiovascular System PDF Questions
Question 1 of 5
The lower, pumping chambers of the heart
Correct Answer: B
Rationale: The ventricles (B) are the lower, pumping chambers. Atria (A) receive, auricles (C) extend atria, coronary sinuses (D) are veins.
Question 2 of 5
Towards the end of erythropoiesis in the bone marrow, a red blood cell loses its nucleus and becomes a
Correct Answer: D
Rationale: Reticulocytes (D) are immature RBCs post-nucleus loss, entering circulation. Proerythroblasts (A) are early, megakaryocytes (B) form platelets, progenitors (C) are stem cells.
Question 3 of 5
Which of the following types of proteins is present at the lowest percentage of the blood component labeled I in the figure?
Correct Answer: C
Rationale: Fibrinogen (C) is ~7% of plasma proteins (assuming I is plasma), lowest among options. Albumin (B) is highest, globulins (A) mid-range, thrombin (D) is active, not stored.
Question 4 of 5
Blood volume per kilogram of body weight varies inversely with:
Correct Answer: B
Rationale: Blood volume/kg decreases with higher body fat (B), as fat is less vascularized.
Question 5 of 5
Thrombocytes are used for:
Correct Answer: A
Rationale: Thrombocytes (platelets, A) initiate clotting.