muscular system - westmont college · muscular system all i ever do is contract! types of...
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Muscular System
All I ever do is contract!
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Types of Muscle
! Skeletal
! Cardiac
! Smooth
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Functions
! Movement
! Stability and posture
! Communication
! Sphincter Control
! Thermoregulation
! Cardiovascular pump
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Characteristics of M.T.
! Mostly cells
! Relatively little
matrix
! Directly
vascularized
! Directly innervated
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Properties of M.T.
! Excitability
(Irritability)
! Contractility
! Extensibility
! Elasticity
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Properties of Skeletal Muscle
! Typically
Voluntary
! Striated
! Fiber Types
" Fast-Twitch
" Slow Twitch
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Anatomy – Gross to Micro
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The Big Picture
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Shapes of Whole Muscle
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Anatomy – Gross to Micro
! Muscle
! Fasciculi
! Muscle Fiber
! Myofibril
! Sarcomere
! Myosin and Actin
myofilaments
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C.T. in Skeletal Muscle
! The 3 Mysium
brothers:
" Epimysium
" Perimysium
" Endomysium
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Microscopic View
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Skeletal Muscle Cell
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Myofilaments
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