HESI A&P Muscular System

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Author:
karla14449
ID:
195506
Filename:
HESI A&P Muscular System
Updated:
2013-01-26 15:39:12
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HESI Muscular System
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Description:
Muscular system portion of A&P HESI
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  1. Muscles produce movement by contracting in response to ______ _______.
    nerve impulse
  2. Muscle contraction results from the sliding together of _____ & ______ myofilaments within the muscle cells or fibers.
    • Actin
    • Myosin
  3. Each muscle cell consists of myofibrils, which in turn are made up of still smaller units called _________.
    Sarcomeres
  4. What 2 elements must be present for muscle cell contraction?
    • ATP
    • Calcium
  5. Nerve impulse from motor neuron causes the release of ______ ions from the Sarcoplasmic Reticulum.
    Calcium
  6. Calcium ions attach to T-Tcomplex on the  ________ filaments, moving it aside so that cross-bridges can form between actin & myosin.
    actin
  7. Using energy supplied by ATP, the filaments slide together to produce ___________.
    contraction
  8. The skeletal muscles, which also make up the muscular system, are also called __________ muscles because they work under conscious control.
    voluntary
  9. Muscle that executes a given movement is called a _______ mover.
    prime
  10. Muscle that produces the opposite as a prime mover is called the _________.
    antagonist
  11. Muscles that work in cooperation with the prime mover are known as __________.
    Synergists
  12. Flexors
    reduce the angle at a joint
  13. Extensors
    increase the angle at a joint

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