1. The Axial Skeleton Forms the longitudinal part of the body
Divided into three parts
Skull
Vertebral column
Bony thorax
Slide 5.20a
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2. The Skull Two sets of bones Bones are joined by sutures
Cranium
Facial bones
Bones are joined by sutures
Only the mandible is attached by a freely movable joint
Slide 5.21a
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3. The Skull Figure 5.7 Slide 5.21b
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4. Bones of the Skull Figure 5.11 Slide 5.22
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5. The Hyoid Bone
The only bone that does not articulate with another bone
Serves as a moveable base for the tongue
Figure 5.12
Slide 5.26
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6. The Fetal Skull
The fetal skull is large compared to the infants total body length
Figure 5.13
Slide 5.27a
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7. The Fetal Skull
Fontanelles – fibrous membranes connecting the cranial bones
Allow the brain to grow
Convert to bone within 24 months after birth
Figure 5.13
Slide 5.27b
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8. The Vertebral Column Vertebrae separated by intervertebral discs
The spine has a normal curvature
Each vertebrae is given a name according to its location
Figure 5.14
Slide 5.28
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9. Cervical Vertebrae C1 and C2
C1 is also called atlas
After the Greek God
Who was punished by
Zeus to hold up the
Heavens on his shoulders
Cervical vertebrae
C2 is also called the
Axis as it has a small bone that the atlas spins on
Figure 5.16
Slide 5.29
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11. The Bony Thorax Forms a cage to protect major organs Figure 5.19a
Slide 5.31a
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12. The Bony Thorax Made-up of three parts Sternum Ribs Thoracic vertebrae
Figure 5.19a
Slide 5.31b
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings