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Terms Associated with Musco-skeletal System
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16
Biology
Undergraduate 1
02/24/2013

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Term
Tonus
Definition
Muscles are never completely at rest; therefore, this is the partial contraction of the muscle.
Term
Tetanus
Definition
General term for a sustained voluntary muscle contraction. Continues until muscle fatique occurs.
Term
Fatique
Definition
This occurs when a muscle is depleted of the materials needed for muscle contraction. For example, ATP, Ca++, oxygen, and acetylcholine.
Term
Prime Movers
Definition
Muscles that provide the movement of a bone
Term
Antagonists
Definition
Muscles that work against the prime mover
Term
Synergists
Definition
Muscles that contract at the same time as the prime movers that stabalize the origin.
Term
Flexion
Definition
Decreasing of an angle at a joint.
Term
Extension
Definition
Increase an agnle at a joint.
Term
Abduction
Definition

Movement of a limb away from the body axis(midline).

 

Term
Adduction
Definition
Movement of a limb towards the body axis(midline)
Term
Give an example of a prime mover.
Definition

Biceps Brachii

 

Term
Give an example of an antagonist.
Definition
Triceps Brachii
Term
Give an example of flexion.
Definition

Prime Mover- Biceps

Antagonist- Triceps

Synergist- Muscles of the Shoulder

Term
Give an example of extension.
Definition

Prime mover- Triceps

Antagonist- Biceps

Synergist- Muscles in Shoulder

Term
Give an example of an abductor muscle.
Definition
Deltoid
Term
Give an example of adductor muscle.
Definition

Pectoralis Major

 

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