ATI RN
Cardiovascular System Assessment Questions Questions
Question 1 of 5
Valve through which the left ventricle pumps blood
Correct Answer: B
Rationale: The left ventricle pumps blood through the aortic semilunar valve (B) into the aorta during systole. Mitral (A) is inflow, pulmonary (C) is right-sided, tricuspid (D) is right AV.
Question 2 of 5
Which of the following is NOT a true statement regarding blood?
Correct Answer: C
Rationale: Blood temperature is ~100.4°F (A) and pH is 7.35-7.45 (B), but it’s red due to erythrocytes/hemoglobin, not leukocytes (C). Volume is ~5L (D).
Question 3 of 5
Which of the following blood cells phagocytizes antigen-antibody complexes and are effective against parasitic worms?
Correct Answer: A
Rationale: Eosinophils (A) combat parasites and immune complexes. Monocytes (B) phagocytize broadly, lymphocytes (C) are immune, basophils (D) promote inflammation.
Question 4 of 5
Which of the following precursor cells give rise to granular leukocytes?
Correct Answer: D
Rationale: Myeloblasts (D) produce granular leukocytes (neutrophils, eosinophils, basophils). Others form RBCs (A), platelets (B), or agranulocytes (C).
Question 5 of 5
Which of the following cell types has the main function of carrying oxygen?
Correct Answer: D
Rationale: Erythrocytes (D) carry oxygen via hemoglobin.