scapulohumeral muscles Flashcards by Brittany Mays

Q

origin of the deltoid

A

clavicle
acromion
spine of scapula

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Q

insertion of the deltoid

A

deltoid tuberosity

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Q

action of the deltoid

A

abduction of the arm

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Q

innervation of the deltoid

A

axillary nerve

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Q

origin of supraspinatus

A

supraspinous fossa of the scapula

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Q

insertion of supraspinatus

A

greater tubercle of the humerus

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Q

action of supraspinatus

A

abduction of the arm

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Q

innervation of supraspinatus

A

suprascapular nerve

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Q

origin of infraspinatus

A

infraspinous fossa of the scapula

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Q

insertion of infraspinatus

A

greater tubercle of the humerus

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Q

action of infraspinatus

A

laterally rotates the arm

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Q

innervation of infraspinatus

A

suprascapular nerve

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Q

origin of teres minor

A

lateral border of scapula

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Q

insertion of teres minor

A

greater tubercle of the humerus

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Q

action of teres minor

A

laterally rotates the arm

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Q

innervation of teres minor

A

axillary nerve

Q

origin of teres major

A

lateral border of the scapula + inferior angle of the scapula

Q

insertion of teres major

A

intertubercular groove of humerus

Q

action of teres major

A

medial rotation, extension, and adduction of the arm

Q

innervation of teres major

A

lower subscapular nerve

Q

origin of subscapularis

A

subscapular fossa

Q

insertion of subscapularis

A

lesser tubercle of humerus

Q

action of subscapularis

A

medial rotator of the arm

Q

innervation of subscapularis

A

upper + lower subscapular nerves