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The Muscular System


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Scanning electron micrograph of motor neurons
terminating at muscle fibers. A muscle fiber
receives the stimulus to contract at a neuromuscular junction.

7.1 Functions and Types of Muscles
(See page(s) 114)

Distinguish between the three types of muscles, and tell where they are located in the body.

Describe the connective tissues of a skeletal muscle.

Name and discuss five functions of skeletal muscles.

7.2 Microscopic Anatomy and Contraction of Skeletal Muscle
(See page(s) 116)

Name the components of a skeletal muscle fiber, and describe the function of each.

Explain how skeletal muscle fibers are innervated and how they contract.

Describe how ATP is made available for muscle contraction.

7.3 Muscle Responses
(See page(s) 122)

Contrast the responses of a muscle fiber and whole muscle in the laboratory with their responses in the body.

Contrast slow-twitch and fast-twitch muscle fibers.

7.4 Skeletal Muscles of the Body
(See page(s) 124)

Discuss how muscles work together to achieve the movement of a bone.

Give examples to show how muscles are named.

Describe the locations and actions of the major skeletal muscles of each body region.

7.5 Effects of Aging
(See page(s) 134)

Describe the anatomical and physiological changes that occur in the muscular system as we age.

7.6 Homeostasis
(See page(s) 136)

Describe how the muscular system works with other systems of the body to maintain homeostasis.

Describe some common muscle disorders and some of the serious diseases that can affect muscles.








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