The Supraspinatus Is Named for Its Location on the Posterior

question 43

Multiple Choice

The supraspinatus is named for its location on the posterior aspect of the scapula above the spine.What is its action?

• A)to flex and adduct the humerus and to act as a synergist of the pectoralis major
• B)to stabilize the shoulder joint and help prevent downward location of the humerus and to assist in abduction
• C)to extend and medially rotate the humerus and to act as a synergist of the latissimus dorsi
• D)to help hold the head of the humerus in the glenoid cavity and rotate the humerus laterally

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Definitions:

Reject

In statistics, to conclude that there is enough evidence to discard the null hypothesis in favor of the alternative hypothesis.

F-Ratio

A statistical measure used in the context of ANOVA, calculated as the variance between sample means divided by the variance within the samples.

Main Effect

The direct impact of an independent variable on a dependent variable in an experimental design, ignoring interaction effects.

Factor A

A term used in experimental design and analysis to denote one of potentially several independent variables being studied for its impact on a dependent variable.