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Transcript
Chapter 10 THE MUSCULAR SYSTEM
10.1 The Structural and Functional Organization of Muscles
Objectives
When you have completed this section, you should be able to
• describe the varied functions of muscles;
• describe the connective tissue components of a muscle and their relationship to the bundling of muscle
fibers;
• describe the various shapes of skeletal muscles and relate this to their functions;
• explain what is meant by the origin, insertion, belly, action, and innervation of a muscle;
• describe the ways that muscles work in groups to aid, oppose, or moderate each other’s actions;
• distinguish between intrinsic and extrinsic muscles;
• describe in general terms the nerve supply to the muscles and where these nerves originate; and
• explain how the Latin names of muscles can aid in visualizing and remembering them.
10.2 Muscles of the Head and Neck
Objectives
When you have completed this section, you should be able to
• name and locate the muscles that produce facial expressions;
• name and locate the muscles used for chewing and swallowing;
• name and locate the neck muscles that move the head; and
• identify the origin, insertion, action, and innervation of any of these muscles.
10.3 Muscles of the Trunk
Objectives
When you have completed this section, you should be able to
• name and locate the muscles of respiration and explain how they affect airflow and abdominal pressure;
• name and locate the muscles of the abdominal wall, back, and pelvic floor; and
• identify the origin, insertion, action, and innervation of any of these muscles.
10.4 Muscles Acting on the Shoulder and Upper Limb
Objectives
When you have completed this section, you should be able to
• name and locate the muscles that act on the pectoral girdle, shoulder, elbow, wrist, and hand;
• relate the actions of these muscles to the joint movements described in chapter 9; and
• describe the origin, insertion, and innervation of each muscle.
10.5 Muscles Acting on the Hip and Lower Limb
Objectives
When you have completed this section, you should be able to
• name and locate the muscles that act on the hip, knee, ankle, and toe joints;
• relate the actions of these muscles to the joint movements described in chapter 9; and
• describe the origin, insertion, and innervation of each muscle.