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ergofogle sec. 2a
Section 2 muscle terms
10
Anatomy
Graduate
09/19/2011

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Cards

Term
muscle anatomy terms
Definition

origin- fixed end or attachement of muscle

 

insertion- attachment muscle to bone that it moves

 

belly

tendon

Term
types of muscle
Definition

smooth-lines the hollow cavaties of the body

 

cardiac

skeletal or striated

Term
types of skeletal muscle
Definition

type 1

type 2

Term
type 1 (slow twitch)
Definition

high vascularization

high endurance

contract slowly

Term
type 2 (fast twitch)
Definition

low vascularization

low endurance

contract quickly

Term
muscle microanatomy
Definition

Z(zwichensciebe) lines or discs actin anchored there

 

I(isotropic) bands actin only

 

A(anisotropic) bands where actin and myosin interact

 

H(hensen's) zones or bands or discs mysosin only shrinks when muscle contracts

Term

thin filament

 

 

Definition

actin

troponin

tropomysin

Term
thick filament
Definition
myosin
Term
motor unit
Definition
motor nerve and all of the fibers that it innervates
Term
myofibril
Definition

smallest functioning unit of the muscle

 

consists of myofilaments

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