ATI RN
100 Questions on the Cardiovascular System Questions
Question 1 of 5
This area in the pericardium contains fluid
Correct Answer: A
Rationale: The pericardial cavity (A) between the visceral and parietal pericardium contains fluid to reduce friction. Other options are heart layers.
Question 2 of 5
Which of the following blood cells is involved in reducing blood loss from a damaged blood vessel?
Correct Answer: B
Rationale: Platelets (B) form clots to reduce blood loss. Erythrocytes (A) carry oxygen, lymphocytes (C) are immune, basophils (D) release histamine.
Question 3 of 5
Which of the following precursor cells eventually give rise to the platelets?
Correct Answer: A
Rationale: Megakaryoblasts (A) fragment into platelets. Others form RBCs (B), granulocytes (C), or lymphocytes (D).
Question 4 of 5
Which mature cell has no nucleus, mitochondria, or ribosomes?
Correct Answer: A
Rationale: Erythrocytes (A) lack organelles for oxygen transport efficiency.
Question 5 of 5
The type of plasma protein that constitutes more than half of the total amount is:
Correct Answer: C
Rationale: Albumin (C) is ~55% of plasma proteins.