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Muscular System
Muscular System notes
21
Anatomy
Undergraduate 1
11/04/2009

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Term
Skeletal Muscle
Definition
More than 1 Nucleus, Striated, Attached to Bones, Long Parallel Fibers, Voluntary Control
Term
Smooth Muscle
Definition
1 Nucleus, Not Striated, Attaches to Organs and vessels, Short Fibers, Involuntary Control
Term
Cardiac Muscle
Definition
1 Nucleus, Striated, Attached to wall of heart, Intercalated discs, Short Fibers, Involuntary Control
Term
Fasicles
Definition
Make up Muscles
Term
Make up Fasicles
Definition
Muscle Fibers
Term
Make up fasicles
Definition
Microfibrils
Term
Make up Microfibrils
Definition
Filaments
Term
Sarcomere
Definition
Microfibrils spanning between two bones
Term
Sarcolemma
Definition
Muscle Membrane
Term
Sarcoplasmic Reticulum
Definition
The E.R. in muscles that contain Calcium ions.
Term
Actin
Definition
Thin filament in muscles that have receptor.
Term
Myosin
Definition
Thick filament in muscles...the head.
Term
Tropomyosin
Definition
Wraps around actin, hiding receptor site.
Term
Troponin
Definition
Attached to tropomyosin...acts as a zipper. Calcium binds to it.
Term
Neuromuscular Junction
Definition
Where motor neuron connects to muscle membrane.
Term
Acetylcholine
Definition
The muscular neurotransmitter.
Term
Cross Bridge
Definition
The attachment of Myosin and Actin
Term
3 ATPS
Definition
the amount spent as myosin head pivots, myosin head detaches, and myosin head resets.
Term
Muscle Fatigue
Definition
When muscle runs out of oxygen
Term
Myoglobin
Definition
Stores oxygen in muscle tissues.
Term
Origin, INsertion, Action, Arterial Supply, and Innervation
Definition
The 5 things all muscles have.
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