The Axial Skeleton Made Of A Total 80 Bones Segregated Into 4 Regi

The Axial Skeleton

The axial skeleton is made up of a total of 80 bones segregated into 4 regions:

1. The Skull
2. Vertebral Column
3. The Thoracic Cage
   • 12 Thoracic Vertebrae
   • Ribs
   • Sternum
4. Hyoid Bone

1. The Skull Bones

The skull consists of 22 bones that can be divided into two regions:

1. The Cranium (Cranial Bones)
2. Facial Bones

The cranial cavity contains the brain and associated structures. The cranium protects the brain and serves as an attachment site for head and neck muscles. Facial bones form the framework of the face, provide openings for the passage of air and food, anchor the facial muscles of expression, and build the orbits, nasal cavity, and mouth cavity. Each skull bone is immobile except for the lower jaw. The part that connects the skull bones between two parietal bones is the sagittal suture. The part that connects between the parietal and frontal bone is the coronal suture. The part that connects between the two parietal bones and oc