Vocabulary Terms and Definitions
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| What is another name for a muscle cell? | MUSCLE FIBER
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| The more movable attachment to the bone is called what? | INSERTION
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| The muscle attachment to the more stationary bone is called what? | ORIGIN
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| What is the name of the protein that makes up the thin myofilaments? | ACTIN
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| What is the name of the protein that makes up the thick myofilaments? | MYOSIN
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| What is the basic functional unit of contraction in skeletal muscle? | SARCOMERE
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| What are the three functions of the skeletal system? | MOVEMENT, POSTURE, AND HEAT PRODUCTION
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| What molecule supplies energy for muscle contraction? | ATP
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| What is the waste product produced when the muscle must must switch to an energy supplying process that does not require oxygen? | LACTIC ACID
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| What is the name for a single motor neuron that innervates muscle? | MOTOR UNIT
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| What is the name for the minimal level of stimulation required to cause a muscle to contract? | THRESHOLD STIMULUS
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| What is the name for the type of muscle contraction that produces movement in a joint and allows the muscles to shorten? | ISOTONIC
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| What is the name for the type of muscle contraction that doesn't produce movement and doesn't allow the muscle shorten but it does increase muscle tension? | ISOMETRIC
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| What is the term for describing movement of a body part away from the midline of the body? | ABDUCTION
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| What is the term used to describe the movement that is opposite of flexion? | EXTENSION
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| What term describes the hand position when the body is in anatomical position? | SUPINATION
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| Skeletal muscles can also be called? | VOLUNTARY MUSCLES
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