Question
Give an account on:
i. Sacrum
ii. Coccyx
i. Sacrum
ii. Coccyx
✓
Answer
i. Sacrum:
- It is a triangular bone formed by the fusion of five sacral vertebrae.
- It is located in pelvic cavity between two hip bones.
- The anterior end of sacrum is broad and posterior end is narrow.
- It consists of vertebral foramina formed by the fusion of vertebrae.
- The reduced neural spines can be observed projecting from dorsal aspect of sacrum.
- Function: It gives strength to pelvic girdle,
- It is a triangular bone which is formed by fusion of four coccygeal vertebrae.
- It is reduced and does not show vertebral foramina and spinous processes.
- The transverse processes of coccygeal vertebrae are reduced.
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