1. PowerPoint ® Lecture Slide Presentation by Patty Bostwick-Taylor, Florence-Darlington Technical College Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings PART D 5 The Appendicular Skeletal System

2. Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings The Appendicular Skeleton  Composed of 126 bones  Limbs (appendages)  Pectoral girdle  Pelvic girdle

3. Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings The Appendicular Skeleton Figure 5.6a

4. Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings The Appendicular Skeleton Figure 5.6b

5. Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings The Pectoral (Shoulder) Girdle  Composed of two bones  Clavicle—collarbone  Scapula—shoulder blade  These bones allow the upper limb to have exceptionally free movement

6. Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Bones of the Shoulder Girdle Figure 5.21a

7. Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Bones of the Shoulder Girdle Figure 5.21b

8. Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Scapula  Acromion process- bony projection that connects to the clavicle and forms the acromioclavicular joint  Glenoid cavity- socket that receives head of humerus  Coracoid process- anchors some of the muscles of the arm  Spine- part you can feel in your back  Supraspinous process- above the spine  Infraspinous process- below the spine

9. Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Bones of the Shoulder Girdle Figure 5.21c–d

10. Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Bones of the Upper Limbs  Humerus  Forms the arm  Single bone

11. Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Humerus  Head- ball that goes into glenoid cavity  Neck  Anatomical neck- around the ball  Surgical neck- prone to breakage and below the head  Greater tubercle- big bump on top  Lesser tubercle- little bump on top  Medial and Lateral epicondyle- bumps on bottom

12. Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Humerus  Oleranon fossa- grove between the medial and lateral epicondyles where olecronon fits  Capitulum- bump behind lateral epicondyle  Trochlea- behind the medial epicondyle  Deltoid tuberosity- bump in the shaft where the deltoid muscle attaches

13. Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Bones of the Upper Limbs Figure 5.22a–b

14. Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Bones of the Upper Limbs  The forearm has two bones  Ulna  Medial bone in anatomical position  Olecranon process makes the elbow  On pinky side  Radius  Lateral bone in anatomical position  On thumb side

15. Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Bones of the Upper Limbs Figure 5.22c

16. Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Bones of the Upper Limbs  The hand  Carpals— 8 wrist bones  Pisiform- bone by little finger that sticks out  Metacarpals— palm  5 bones of hand  Heads of metacarpals make the knuckles  Phalanges—fingers  14 bones, 3 in each finger; 2 in thumb

17. Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Bones of the Upper Limbs Figure 5.23