Term
| Where is the acromion located? |
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Definition
| Most anterior portion of the scapula; articulates with the clavicle |
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Term
| What is a grade I shoulder separation? |
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Definition
| minor tears in the capsule of the acromioclavicular (AC)joint; spacing of AC joint and coracoclavicular is unchanged |
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Term
| What is a grade II shoulder separation? |
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Definition
| a partial subluxation of the AC joint (wider space; coracoclavicular remains the same |
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Term
| What is a grade III separation? |
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Definition
| tears in each of the AC and coracoclavicular; both spaces are widened |
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Term
| What does the head of the humerus articulate with? |
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Definition
| the glenoid cavity of the scapula; glenoid labrum |
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Term
| What is the major nerve of the upper limb? |
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Definition
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Term
| What injury can injure the axillary nerve? |
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Definition
| anterior shoulder dislocations; fractures of the surgical neck of the humerus |
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Term
| What nerve innervates the trap? |
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Definition
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Term
| What is the function of the trapezius? |
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Definition
| prime mover for raising the shoulder; one of the two prime movers for lateral rotation of the scapula |
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Term
| What are the muscles of the rotator cuff |
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Definition
| SITS (supraspinatus, infraspinatus, teres minor, and subscapularis) |
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Term
| Which nerve innervates serratus anterior? |
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Definition
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Term
| What does serratus anterior do? |
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Definition
| prime mover in protraction (forward) of the shoulder; one of two prime movers (w/ trapezius) for lateral rotation |
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Term
| What does supraspinatus do? |
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Definition
| abducts the arm at the shoulder joint from 0 to 10 degrees |
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Term
| What innervates the supraspinatus? |
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Definition
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Term
| Where do the nerve fibers come from that innervate the supraspinatus? |
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Definition
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Term
| What innervates the deltoid? |
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Definition
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Term
| What does the deltoid do? |
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Definition
| prime mover of the abduction of the arm at the shoulder joint from greater than 10 degrees |
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Term
| What supplies the nerve fibers that innervate the deltoid |
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Definition
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Term
| Which nerve fibers mainly control abduction of the arm at the shoulder joint? |
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Definition
| C5 (supraspinatus and deltoid receive more innervation from C5 than C6) |
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