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A O I Posterior View A O I Posterior View A O I - - PowerPoint PPT Presentation
A O I Posterior View A O I Posterior View A O I - - PowerPoint PPT Presentation
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Triceps Brachii
Trail Guide, Page 97
Triceps brachii is the only muscle located on the posterior arm. The name means “three- headed muscle of the arm”. The three muscle bellies are:
- Long head
- Lateral head
- Medial head
When do you use your triceps brachii?
Posterior View Posterior View
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Actions of the triceps brachii
Glenohumeral extension Glenohumeral adduction Humeroulnar extension Posterior View
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Erector Spinae Group
Trail Guide, Page 196
The erector spinae group runs from the sacrum to the occiput. Erectors have a dense, layered arrangement similar to that of a poplar tree. The erector group consists of the:
- Spinalis
- Longissimus
- Iliocostalis
When do you use your erectors?
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