The adult skeleton has 2 principle divisions, which one contains more bones? a.

Question

The adult skeleton has 2 principle divisions, which one contains more bones? a. Axial b. Appendicular C. Both are about equal What do depressions, openings, and processes describe? a. Irregular bones b. Foramen c. Bone surface markings When describing the cranial bones, which is the only movable bone of the skull? a. Parietal bone because the sutures have not solidified here b. Mandible c. It depends of the suture between the parietal and the ethmoid bones. Only if these bones are solidified can the cranium be truly solid.

Explanation / Answer

The axial and appendicular divisions together makes up 206 bones, appendicular is not fused like the axial so it aid in movement and locomotion.

1. Axial- It is composed of 80 bones.it is in the head and trunk region. It is mainly composed of 6 parts that are- skull bone, ossicles of middle ear,hyoid bone, rib cage , sternum, vertebral column.

Appendicular- this consist of 126 bones. It involved in locomotion of the axial skeleton. It is formed during development from cartilage by the process ' endochondral ossification' . It also consist of 6 regions are- pectoral bridle, arm and forearm, hand, pelvis, thighs and legs, feet and ankle.

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