Back Flashcards

1
Q

Trapezius action

A

Upper fibers elevate scapula

Middle fibers retract scapula

Lower fibers depress scapula

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2
Q

Trapezius innervation

A

Spinal accessory nerve CN XI

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3
Q

Latissimus Dorsi action

A

Extends, adducts, and medially rotates arm

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4
Q

Latissimus Dorsi innervation

A

Thoracodorsal n

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5
Q

Deltoid action

A

Anterior flexes arm

Middle abducts 15 to 90 degrees

Posterior extends arm

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6
Q

Deltoid innervation

A

Axillary nerve

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7
Q

Levator scapulae action

A

Elevates scapula

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8
Q

Levator scapulae innervation

A

Dorsal scapular nerve

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9
Q

Rhomboids action

A

Retracts scapula

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10
Q

Rhomboids innervation

A

Dorsal scapular nerve

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11
Q

Dorsal scapular nerve innervates which two muscles

A

Levator scapulae and rhomboids

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12
Q

Teres major action

A

Adducts and medially rotates arm

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13
Q

Teres major innervation

A

Lower subscapular nerve

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14
Q

Subscapularis action

A

Adducts and medially rotates arm

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15
Q

Subscapularis innervation

A

Upper and lower subscapular nerve

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16
Q

Which two muscles adduct and medially rotates arm

A

Teres major and subscapularis

17
Q

Supraspinatus action

A

Abduction up to 15 degrees, initiates abduction

18
Q

Supraspinatus innervation

A

Suprascapular nerve

19
Q

Infraspinatus action

A

Laterally rotates arm

20
Q

Infraspinatus innervation

A

Suprascapular nerve

21
Q

Which two muscles innervated by suprascapular nerve

A

Supraspinatus and infraspinatus

22
Q

Teres minor action

A

Laterally rotates arm

23
Q

Teres minor innervation

A

Axillary nerve

24
Q

Which two muscles laterally rotates arm

A

Infraspinatus and teres minor

25
Q

Which are the 4 rotator cuff muscles

A

Subscapularis, supraspinatus, infraspinatus, teres minor

26
Q

Erector spinae action

A

Extends and laterally rotates vertebral column

27
Q

Erector spinae nerve

A

Dorsal rami of spinal nerves