Chapter 43 Outline


Musculoskeletal System

Comparative anatomy of animal skeletal systems precedes an examination of the human musculoskeletal system. Structure and function of whole muscles and muscle fibers are also included in the chapter.

Chapter Outline

In this chapter outline, the learning objectives and the selected key terms are given for each major head in the chapter.

1. Describe the functions of a skeletal system in animals.
2. Distinguish among the three types of skeletons in the animal kingdom, and
give examples of animals that have each type.

Humans Have an Endoskeleton (p. 753)

3. Describe the anatomy of a long bone and the tissues found in a long bone.
4. Explain how bone is continually being broken down and renewed.
5. Name the two parts of the human skeleton, and list the location of the bones for
both.
6. Name the different types of joints, and give an example of each.
Selected Key Terms: osteoblast, osteoclast, osteocyte, axial skeleton, sinus,
foramen magnum, mandible, maxilla, vertebral column, rib, sternum, appendicular
skeleton, pectoral girdle, clavicle, scapula, humerus, ulna, radius, carpal, digit, pelvic
girdle, synovial joint, menisci

How Muscles Function (p. 759)

7. Describe how whole muscles work in antagonistic pairs.
8. Describe the anatomy of a muscle fiber and a sarcomere.
9. Explain the sliding filament theory of muscle contraction.
10. List the sources of ATP energy for muscle contraction, and explain the
development of oxygen debt.
11. List the series of events that occur after a muscle fiber is innervated by
nervous stimulation.
tendon, sarcolemma, myofibril, sarcomere, myosin, actin, sliding filament theory,
oxygen debt, neuromuscular junction, muscle action potential

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