Essentials of Anatomy and Physiology

upper arm does not move. The radius crosses over the ulna, which permits the hand to perform a great vari- ety of movements with ...

• • • • • • • • • • • • Clavicle Sternal end Glenoid fossa Scapula Trochlea Semilunar notch Olecranon proc ...

functional importance because the hip is a weight- bearing joint, whereas the shoulder is not. Because the acetabulum is deep, t ...

Figure 6–13. Hip bones and sacrum. (A) Male pelvis, anterior view. (B) Male pelvis, lat- eral view of right side. (C) Female pel ...

Ischium Medial condyle Medial condyle Tibial tuberosity Pubis Tibia Medial malleolus Talus Navicular Tarsals Cuneiforms First Se ...

128 The Skeletal System Table 6–4 BONES OF THE HIP AND LEG—IMPORTANT PARTS Bone Part Description Pelvic (2 hip bones) Femur Tibi ...

Carpals Head of femur Acetabulum of hip bone Trochlea of humerus Semilunar notch of ulna Bodies of ...

130 Bone Synovial membrane Joint capsule Joint cavity (synovial fluid) Bursa Articular cartilage Tendon Bone Figure 6–16. Struct ...

Although the normal wear and tear of joints cannot be prevented, elderly people can preserve their bone matrix with exercise (da ...

Hormones—produced by endocrine glands; con- cerned with cell division, protein synthesis, calcium metabolism, and energy produc ...

The Skeletal System 133 REVIEW QUESTIONS Explain the differences between compact bone and spongy bone, and state where each typ ...

stomachs. Since then (1994), the number of SIDS deaths has decreased markedly. What do you think has happened to the skulls of m ...

CHAPTER 7 The Muscular System 135 ...

136 CHAPTER 7 Chapter Outline Muscle Structure Muscle Arrangements Antagonistic muscles Synergistic muscles The Role of the Brai ...

The Muscular System 137 New Terminology Actin (AK-tin) Antagonistic muscles (an-TAG-on-ISS-tik MUSS- uhls) Creatine phosphate (K ...

Do you like to dance? Most of us do, or we may simply enjoy watching good dancers. The grace and coordination involved in dancin ...

Joints that are capable of a variety of movements have several sets of antagonists. Notice how many ways you can move your upper ...

motor areasof the frontal lobes generate electro- chemical impulses that travel along motor nerves to muscle fibers, causing the ...

trolled fall against gravity. Without such control (which we do not have to think about) a downhill walk would quickly become a ...

is glycogen. When glycogen is needed to provide energy for sustained contractions (more than a few seconds), it is first broken ...