ATI RN
Multiple Choice Questions on Skeletal System Questions
Question 1 of 5
What body part is able to perform pronation and supination?
Correct Answer: A
Rationale: Pronation/supination occur in the forearm, with radius rotating over ulna. Foot does inversion/eversion, thigh and wrist don’t pronate/supinate. Answer is A, per the document.
Question 2 of 5
Which of the list below is a cell that reabsorbs bone?
Correct Answer: D
Rationale: Osteoclasts reabsorb bone, breaking it down. Osteons are structures, osteoblasts form bone, osteocytes maintain it. Answer is D, per the document (note: text error corrected—osteoblast matures to osteocyte, not osteoclast).
Question 3 of 5
The appendicular skeleton includes all of the following EXCEPT one. Which one?
Correct Answer: B
Rationale: Appendicular skeleton includes pectoral girdle, phalanges, and lower limbs. Thoracic cage (ribs, sternum) is axial. Answer is B, per the document.
Question 4 of 5
Haemopoiesis refers to
Correct Answer: A
Rationale: Haemopoiesis is blood cell formation in bone marrow (‘poiesis’ = making). Clotting is haemostasis, crenation is osmotic, and proportion isn’t haemopoiesis. Answer is A, per the document.
Question 5 of 5
What are the cells that are found in the lacunae of compact bone called?
Correct Answer: A
Rationale: Osteocytes are mature bone cells in lacunae of compact bone, derived from osteoblasts. Osteons are structures, not cells. Answer is A, per the document.