1. Chapter 5 The Skeletal System
Essentials of Human Anatomy & Physiology
Seventh Edition
Elaine N. Marieb
Chapter 5 The Skeletal System
Slides 5.31a – 5.37
Lecture Slides in PowerPoint by Jerry L. Cook
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

2. The Bony Thorax Forms a cage to protect major organs Figure 5.19a
Slide 5.31a
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3. The Bony Thorax Made-up of three parts Sternum Ribs Thoracic vertebrae
Figure 5.19a
Slide 5.31b
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4. The Appendicular Skeleton
Limbs (appendages)
Pectoral girdle
Pelvic girdle
Slide 5.32a
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5. The Appendicular Skeleton
Figure 5.6c
Slide 5.32b
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6. The Pectoral (Shoulder) Girdle
Composed of two bones
Clavicle – collarbone
Scapula – shoulder blade
These bones allow the upper limb to have exceptionally free movement
Slide 5.33
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7. Bones of the Shoulder Girdle
Figure 5.20a, b
Slide 5.34a
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9. Dislocated Shoulder

10. Bones of the Shoulder Girdle
Acromion – articulates w/clavicle
Figure 5.20c, d
Slide 5.34b
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11. Bones of the Upper Limb The arm is formed by a single bone Humerus
Figure 5.21a, b
Slide 5.35a
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12. Bones of the Upper Limb The forearm has two bones Ulna Radius
Figure 5.21c
Slide 5.35b
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13. Tendon for biceps attaches
Deltoid muscle of shoulder attaches
Articulates w/radius
Joins the ulna

14. Bones of the Upper Limb The hand Carpals – wrist Metacarpals – palm
Phalanges – fingers
Figure 5.22
Slide 5.36
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15. Bones of the Pelvic Girdle
Hip bones
Composed of three pair of fused bones
Ilium
Ischium
Pubic bone
The total weight of the upper body rests on the pelvis
Protects several organs
Reproductive organs
Urinary bladder
Part of the large intestine
Slide 5.37
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings