What are the main features of an axial skeleton?
The axial skeleton is the central part of the skeleton, consisting of the skull, spine, and rib cage. It provides support and protection for the body's vital organs and forms the axis around which the body moves.
Features of the Axial Skeleton:
- Skull: The skull is made up of 22 different bones that protect the brain, eyes, ears, and nose.
- Spine: The spine is a flexible column of 33 vertebrae that protects the spinal cord and provides support and mobility.
- Rib cage: The rib cage is made up of 12 pairs of ribs that connect to the spine and protect the chest cavity and its organs, such as the heart and lungs.
Additional Features:
- Intervertebral discs: Between the vertebrae are intervertebral discs that act as cushions to absorb shock and allow for flexibility.
- Sacrum: The sacrum is a triangular bone at the base of the spine that connects it to the pelvis.
- Coccyx: The coccyx is a small bone at the bottom of the spine and is commonly referred to as the tailbone.
FAQs:
- What is the function of the axial skeleton?
- Provides support, protection, and mobility.
- How many bones make up the skull?
- 22
- What is the name of the bone that protects the spinal cord?
- Vertebrae
- Where is the rib cage located?
- Chest cavity
- What is the purpose of intervertebral discs?
- Cushion and provide flexibility.
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