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Chapter 7

Chapter 7 Lecture. Chapter 7. The Skeletal System: Appendicular Division. Frederic Martini Michael Timmons Robert Tallitsch. Introduction. The appendicular skeleton is involved in changing your position in the external environment. Standing Walking Sitting Dressing Driving a car.

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Chapter 7

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  1. Chapter 7 Lecture Chapter 7 The Skeletal System: Appendicular Division Frederic Martini Michael Timmons Robert Tallitsch

  2. Introduction • The appendicular skeleton is involved in changing your position in the external environment. • Standing • Walking • Sitting • Dressing • Driving a car

  3. Introduction Figure 7.1 The Appendicular Skeleton

  4. The Pectoral Girdle and the Upper Limb • Includes the S-shaped clavicle (collarbone) and the flattened scapula (shoulder blade). • The clavicle articulates with the sternum’s manubrium; is the only direct connection between the axial skeleton and the pectoral girdle. • The scapula is attached to the clavicle anteriorly but has no connection to the actual axial skeleton; instead skeletal muscles and ligaments support it. The Pectoral Girdle PLAY

  5. The Clavicle Figure 7.3 The Clavicle

  6. The Scapula Figure 7.5a,b,c The Scapula

  7. The Scapula Figure 7.5d,e,f The Scapula

  8. The Upper Limb • Consists of the: • Brachium (humerus) • Antebrachium (ulna and radius) • Wrist (carpals) • Hand (metacarpals and phalanges)  The Upper Limb PLAY

  9. The Humerus: Anterior Figure 7.6a The Anterior Humerus

  10. The Humerus: Posterior Figure 7.6d The Posterior Humerus

  11. The Ulna and Radius: Posterior Figure 7.7a The Posterior Forearm

  12. The Ulna and Radius: Anterior Figure 7.7d The Anterior Forearm

  13. The Wrist and Hand • The carpal bones are the eight bones of the wrist. • The five metacarpal bones articulate with the distal carpal bones and make up the palm of the hand. • The fourteen phalanges of the hand make up the finger bones. The Wrist and Hand PLAY

  14. Hand • SLTPTTCH

  15. The Pelvic Girdle and Lower Limb • The pelvic girdle supports and protects the lower viscera and developing fetus in females. • The bones of the pelvic girdle and lower limb are much more massive than their homologues of the upper limb. • Consists of two ossa coxae bones. • The lower limb includes the thigh (femur), kneecap (patella), leg, (tibia and fibula), ankle (tarsals), and foot (metatarsals and phalanges). The Pelvic Girdle and Lower Limb PLAY

  16. The Pelvic Girdle Figure 7.10a Lateral Pelvic Girdle

  17. The Pelvic Girdle Figure 7.10b Medial Pelvic Girdle

  18. The Pelvis Figure 7.11a Anterior Pelvis Figure 7.11b Posterior Pelvis

  19. The Pelvis Figure 7.12a Superior Pelvis Figure 7.12c Inferior Pelvis

  20. The Pelvis: Male vs. Female • The male and female pelvis contains numerous differences. • Generally the male pelvis is heavier with more prominent markings due to the larger muscles attached to it.

  21. The Pelvis: Male vs. Female • Characteristics of the female pelvis: • Enlarged pelvic outlet, due to wider ischial spines • Less curvature of the sacrum and coccyx • Wider, more circular pelvic inlet • Broader, lower pelvis • Widely fanning ilia • Pubic angle greater than 100° The Pelvis PLAY

  22. The Femur: Anterior Figure 7.14a The Anterior Femur

  23. The Femur: Posterior Figure 7.14d The Posterior Femur

  24. The Patella Figure 7.15 The Patella

  25. The Tibia and Fibula: Anterior Figure 7.16a The Anterior Tibia and Fibula

  26. The Tibia and Fibula: Posterior Figure 7.16d The Posterior Tibia and Fibula

  27. The Ankle and Foot • Seven tarsal bones make up the ankle. • The five metatarsal bones articulate with the distal tarsal bones and make up the arches of the foot. • The fourteen phalanges of the foot make up the toe bones. The Ankle and Foot PLAY

  28. Foot

  29. 3 Arches

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