Which vertebrae together are called pelvic vertebrae?
Correct answer: C. Sacral and coccygeal
- A. Coccygeal and lumbar
- B. Sacral and lumbar
- C. Sacral and coccygeal
- D. Sacral and thoracic
Explanation
The single sacrum is formed by the fusion of five sacral vertebrae. Similarly, the coccyx or tailbone, results from the fusion of four small coccygeal vertebrae. The pelvic skeleton is formed in the area of the back, by the sacrum and the coccyx, and anteriorly and to the left and right sides, by a pair of hip bones. The two hip bones connect the spine with the lower limbs.
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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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