What are the Two Major Divisions of the Skeletal System?
The human skeletal system consists of two major divisions: the axial skeleton and the appendicular skeleton.
Axial Skeleton
The axial skeleton forms the central axis of the body and includes the bones of the skull, vertebral column, and rib cage. It provides protection for vital organs, supports the body, and allows for movement. The skull protects the brain and sensory organs, while the vertebral column supports the head and trunk, and protects the spinal cord. The rib cage protects the heart and lungs, and aids in respiration.
Appendicular Skeleton
The appendicular skeleton includes the bones of the limbs and girdles, which attach the limbs to the axial skeleton. It provides support for the limbs, allows for movement, and protects the internal organs. The upper limbs consist of the bones of the shoulder, arm, forearm, wrist, and hands. The lower limbs consist of the bones of the pelvis, thigh, leg, ankle, and feet.
Related Questions and Answers:
- What is the function of the axial skeleton? - Protection for vital organs, support, and movement.
- Which major bones are included in the appendicular skeleton? - Bones of the limbs and girdles.
- What is the primary function of the skull? - Protection of the brain and sensory organs.
- What does the vertebral column protect? - The spinal cord.
- Which division of the skeletal system provides support for the limbs? - Appendicular skeleton.
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