Exam Question on Shoulder Extension

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Exam Question on Shoulder Extension

Shoulder extension and Flexion

What is the primary mover in a shoulder extension? I am getting confused. Thanks for your help.

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answer
by: Anonymous

The subscapularis

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Shoulder Extension
by: jaytrainer

I'm sorry to inform whoever wrote the last comment was wrong. The subscapularis is in fact a shoulder stabalizer muscle making up one of four main rotator cuff muscles. However, the subscapularis' primary action is to medially rotate and adduct the humerus.
Therefore the answer you were looking for as far as shoulder extension is Latissimus Dorsi and Teres Major primarily...along with Posterior Deltoid, Infraspinatus, Teres Minor, long head of Triceps and the sternal head of Pectoralis Major.
Hope that helps you!

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Shouler Extension
by: Joey P

I agree with the second answer. The four primary movers are Triceps Brachii, Latissimus dorsi, posterier deltoid and teres major. That is my answer but I suggest further study I may have missed some. Good Luck hope this helps

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Prime Movers in Shoulder Extension
by: Vim

Hi. the prime movers in shoulder extension are Latissimus Dorsi, teres major, posterior deltoid fibres and the pectoralis major up to 90 deg.Hope that helps!

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At a glance
by: Anonymous

PRIMARY: Posterior Deltoid, Tricep, Rhomboids, Teres Major, also little known that the trapezius is used in this manner as well, not just lifting the scapula. SECONDARY: Lateral Deltoid, Outter-most Pecotalis Major. and TETIARY: will be all of the aforementioned stabilizers in the previous blogs posted. Hope that helps.

Exam Question on Shoulder Extension

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Exam Question on Shoulder Extension