# data[].attributes.body
moving a body part away from the midline

# data[].attributes.body
moving a body part toward the midline

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forms the walls of the heart and contracts to circulate blood

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moving in a circle at a joint, or moving one end of a body part in a circle while the others remain in stationary

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when nerves become short and thick

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muscle fibers that are stimulated by nerves

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a severe tightening of a flexor muscle resulting in bending of a joint

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bending backward or bending the foot toward the knee

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allows the muscle to return to its original shape after it has contracted or stretched

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irritability, the ability to respond to a stimulus such as nerve impulse

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the ability to be stretched

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increasing the angle between two bones, of straightening a body part

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a tough, sheetlike membrane that covers and protects the tissue

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decreasing the angle between two bones, or bending a body part

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the end that moves when the muscle contracts

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they function without conscious thought or control

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a state of partial contraction

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muscles are the bundle of muscle fibers held together by connective tissue

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the end of the bone that does not move

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bending forward or bending the foot away from the knee

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turning a body part downward

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turning a body part around its own axis

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is attached to bones and causes body movement

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turning a body part upward

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strong, tough, fibrous, connective tissue cords

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is found in the internal organs of the body like the digestive system, respiratory system, blood vessels, and eyes

# data[].attributes.body
a person has control over its action