MUSCLES OF THE SCAPULA TO THE HUMERUS Flashcards by JP Studybuddy

Q

Deltoid (Origin)

A

Lateral third of clavicle,
acromion, spine of scapula

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Q

Deltoid (Insertion)

A

Middle of lateral surface of
shaft of humerus

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Q

Deltoid (Nerve Supply)

A

Axillary nerve (C5, 6)

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Q

Deltoid (Action)

A

Abducts arm; Ant – flex &
IR; Post – ext & ER

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Q

Supraspinatus (Origin)

A

Supraspinous fossa

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Q

Supraspinatus (Insertion)

A

Greater tuberosity,
capsule of shoulder joint

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Q

Supraspinatus (Nerve Supply)

A

Suprascapular nerve (C4,
5, 6)

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Q

Supraspinatus (Action)

A

Abducts arm and stabilizes
GH jt.

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Q

Infraspinatus (Origin)

A

Infraspinous fossa

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Q

Infraspinatus (Insertion)

A

Greater tuberosity,
capsule of shoulder joint

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Q

Infraspinatus (Nerve Supply)

A

Suprascapular nerve (C4,
5, 6)

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Q

Infraspinatus (Action)

A

Laterally rotates arm and
stabilizes GH jt.

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Q

Teres Minor (Origin)

A

Upper 2/3 of lateral
border of scapula

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Q

Teres Minor (Insertion)

A

Greater tuberosity,
capsule of shoulder joint

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Q

Teres Minor (Nerve Supply)

A

Axillary nerve (C4, 5, 6)

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Q

Teres Minor (Action)

A

Lateral rotation of arm;
stabilizes GH jt.

Q

Teres Major

A

Lower third of lateral
border of scapula

Q

Teres Major

A

Medial lip of bicipital
groove of humerus

Q

Teres Major

A

Lower subscapular nerve
(C6, 7)

Q

Teres Major

A

Medial rotation and
adduction; stabilizes GH jt.

Q

Subscapularis

A

Subscapular fossa

Q

Subscapularis

A

Lesser tuberosity of
humerus

Q

Subscapularis

A

Upper & lower
subscapular nn (C5, 6, 7)

Q

Subscapularis

A

Medially rotates arm;
stabilizes GH jt.