ATI RN
100 Questions on the Cardiovascular System Questions
Question 1 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 2 of 5
Which mature cell has no nucleus, mitochondria, or ribosomes?
Correct Answer: A
Rationale: Erythrocytes (A) lack organelles for oxygen transport efficiency.
Question 3 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.
Question 4 of 5
If you give a 'unit' of blood in a blood drive and you are an average-sized adult, you have given about what percent of your blood?
Correct Answer: C
Rationale: A unit (~500 ml) is ~10% (C) of 5L total blood volume.
Question 5 of 5
Cells from which platelets are produced
Correct Answer: B
Rationale: Megakaryocytes (B) fragment into platelets.