Which of the following sets of bones does not included in the axial skeleton?
Correct answer: D. Pectoral girdles, pelvic girdle, and appendages
- A. Cranium and facial bones
- B. Sternum, ribs, vertebrae
- C. Lumbar, Thoracic and pelvic bones
- D. Pectoral girdles, pelvic girdle, and appendages
Explanation
The axial skeleton includes the bones along the central axis of the body, including the cranium and facial bones, the sternum, ribs, and vertebrae. While, Pectoral girdles, pelvic girdles, and appendages are part of the appendicular skeleton, which attaches to the axial skeleton. They are not part of the axial skeleton. Therefore, option D is correct.
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About Support and Movement
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
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