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The Muscular System
Summary
8
Anatomy
Professional
02/18/2012

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Term
three main types of muscles
Definition
skeletal, smooth, cardiac
Term
characteristics of skeletal muscle
Definition
striated or stripped
voluntary muscle that allows movement, stabilizes joints, and helps maintain body temperature
Term
characteristics of smooth muscle
Definition
nonstriated
involintary muscle
found in organs of body and linings of vessels
facilitates internal movement within the body
Term
characteristics of cardiac muscle
Definition
involuntary
striated muscle
only found in the heart
Term
muscle movement
Definition
result of primary movers (agonists) and relaxtion of opposing muscles (antagonists)
Term
anatomy of muscle
Definition
muscle consist of many single muscle fibers combrised of myofibrils
smallest functional cantractile unit is sacromere
each sacromere unit contains two threadlike contractile proteins: myosin and actin
Term
muscle contraction
Definition
actin and myosin protein filaments, in the presence of ATP and calcium, fprm crossbridges that cause the filaments to slide past each other, causing the muscle to contract or shorten
Term
their is a relationship between the nervous and muscular systems in which the motor neuron of the nervous system initiates the activity of muscle contraction through the release of a neurotransmitter
Definition
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