The Rotator Cuff Group Is Considered to Function Most Importantly

question 23

Multiple Choice

The rotator cuff group is considered to function most importantly as

• A)movers of the glenohumeral joint.
• B)rotators of the glenohumeral joint.
• C)fixators (stabilizers)of the glenohumeral joint.
• D)antagonists of the glenohumeral joint.

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Definitions:

Depolarization

The loss of polarity, or opposite charges inside and outside; the electrical impulse that initiates a chain reaction resulting in contraction.

Electrical Impulse

A rapid, transient electrical charge that travels along the membrane of a nerve or muscle cell.

Chain Reaction

A sequence of reactions where a reactive product or by-product causes additional reactions to take place.

P-R Interval

A measurement on an electrocardiogram (ECG) reflecting the time between the onset of atrial depolarization and the onset of ventricular depolarization; important in diagnosing cardiac conditions.