ATI RN
Exam Questions on Cells Tissues and Organs Questions
Question 1 of 5
Breakdown of erythrocytes in the body
Correct Answer: D
Rationale: RBCs break down after ~120 days in the spleen (reticulo-endothelial system), yielding bilirubin transported by albumin to the liver; most iron is recycled.
Question 2 of 5
The conversion of fibrinogen to fibrin
Correct Answer: C
Rationale: Thrombin (from prothrombin) cleaves fibrinogen, and fibrin monomers polymerize to form clots; heparin inhibits thrombin.
Question 3 of 5
VitaminB12 deficiency may
Correct Answer: A
Rationale: B12 absorption occurs in the ileum; deficiency causes megaloblastic anemia (large RBCs), not small.
Question 4 of 5
Potassium depletion
Correct Answer: A
Rationale: Muscle biopsy reveals low K+; GI losses (e.g., diarrhea) deplete K+; it reduces muscle activity.
Question 5 of 5
While doing work and running, you move your organs like hands, legs etc. Which among the following is correct?
Correct Answer: D
Rationale: Skeletal muscles or striated muscles are present in the body wall and the limbs, i.e biceps and triceps of arms, legs whose contraction and relaxation are in the control of organism, called voluntary muscles attached to the bones by tendons. When they contract, the tendon moves the bone for the movement of limbs.