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16 Cards in this Set
- Front
- Back
What are three muscle functions?
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1. movement
2. produce heat 3. maitain posture |
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what is the state of partial muscle contraction called? what is this for?
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tonus, for maintaining posture in a stationary position
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what are the three types of muscle
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1. cardiac
2. viceral (smooth) 3. skeletal |
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which types of muscle are involuntary
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cardiac and visceral
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which types of muscle are striated
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cardiac and skeletal
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what are the three parts of a muscle
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1. belly
2. origin 3. insertion |
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origin vs insertion?
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origin=proximal, less movable
insertion=distal, more movable |
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what are the three types of connective tissue and what do they attach to
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1. endomysium-muscle fiber(cell)
2. perimysium-fascicles 3. epimysium-fascia around entire muscle |
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what gives the muscle attachments strength
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the continuity of the fibers
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what is the striated appearance of muscle fiber due to
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the arrangement of thick and thin myofilaments within the cells.
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what are possible roles a muscle can have
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1. prime mover (agonist)
2. antagonist 3. synergist (steadier) 4. fixator-(maintain) |
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flexion vs extension?
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flexion=away from anatomical position
extension=toward anatomical position |
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abduction vs. adduction
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abduction=away from midline
adduction=toward midline |
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rotation vs. circumduction
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rotation=movement around axis
circumduction=involves flexion, extension, ab and adduction |
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what is an immune disease that causes muscle weakness
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myasthenia gravis
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what is a genetic disease that causes muscle weakness?
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muscular dystrophy
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