1. Chapter 5 The Skeletal System
Essentials of Human Anatomy & Physiology
Seventh Edition
Elaine N. Marieb
Chapter 5 The Skeletal System
Slides 5.25a – 5.30b
Lecture Slides in PowerPoint by Jerry L. Cook
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

2. Paranasal Sinuses
Hollow portions of bones surrounding the nasal cavity
Figure 5.10
Slide 5.25a
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

3. Paranasal Sinuses Functions of paranasal sinuses Lighten the skull
Give resonance and amplification to voice
Figure 5.10
Slide 5.25b
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

4. 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
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

5. The Fetal Skull
The fetal skull is large compared to the infants total body length
Figure 5.13
Slide 5.27a
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

6. 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
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

7. 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
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

8. Structure of a Typical Vertebrae
Figure 5.16
Slide 5.29
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

9. Regional Characteristics of Vertebrae
Figure 5.17a, b
Slide 5.30a
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

10. Regional Characteristics of Vertebrae
Figure 5.17c, d
Slide 5.30b
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings