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Skin and MS > Superficial Back > Flashcards

Superficial Back Flashcards

1
Q

Latissimus Dorsi

A

Thoracodorsal Nerve

Extends, adducts, and medially rotates the humerus at the shoulder joint

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2
Q

Trapezius

A 
Accessory Nerve (Cranial Nerve XI) and C3 & C4
Elevates (upper fibers), retracts (middle fibers), and depresses (lower fibers) scapula
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3
Q

What muscle/nerve is injured in a droopy shoulder?

A

Trapezius - Accessory Nerve

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4
Q

Levator Scapulae

A

Dorsal Scapular Nerve

Elevates and fixes the scapula

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5
Q

Rhomboid Minor and Major

A

Dorsal Scapular Nerve

Retracts and elevates the scapula

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6
Q

Serratus Anterior

A

Long Thoracic Nerve

Protracts scapula and holds it against thoracic wall; positions glenoid cavity

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7
Q

What muscle/nerve is injured in a winged scapula?

A

Serratus Anterior - Long Thoracic Nerve

*Can be hereditary

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8
Q

Deltoid

A

Axillary Nerve
Anterior fibers: Flex and medially rotate the humerus
Middle fibers: Chief abductor of the humerus
Posterior fibers: Extend and laterally rotate the humerus

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9
Q

Teres Major

A

Lower subscapular nerve

Adducts and medially rotates the humerus

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10
Q

Supraspinatus

A

Suprascapular nerve

Abducts the humerus

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11
Q

Infraspinatus

A

Suprascapular nerve

Laterally rotates the humerus

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12
Q

Teres Minor

A

Axillary Nerve

Laterally rotates the humerus

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13
Q

Subscapularis

A

Upper and lower subscapular nerves

Medially rotates the humerus

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14
Q

Omohyoid Muscle

A

Cervical nerves 1, 2, 3

Depresses, retracts and steadies hyoid bone

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15
Q

Musculotendinous Muscles

A

Rotator Cuff: Subscapularis, Supraspinatus, Infraspinatus, Teres Minor

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16
Q

What muscles and nerve forms the posterior axillary fold?

A

Teres Major and Latissimus Dorsi - Thoracodorsal Nerve

17
Q

What arteries form collateral circulation of the shoulder region?

A

Transverse Cervical Artery
Dorsal Scapular Artery
Suprascapular Artery
Circumflex Scapular Artery

18
Q

What muscles form the triangle of auscultation?

A

6th intercostal space formed by the trapezius, the medial border of the scapula, and the latissimus dorsi

Skin and MS (7 decks)

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