Muscles of the Back and Craniocervical Regions: Superficial Muscles of the Back Flashcards

1
Q

Upper Trapezius Proximal Attachment

A

Medial end of the superior nuchal line, external occipital protuberance, ligamentum nuchae, and spinous process of C7

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2
Q

Upper Trapezius Distal Attachment

A

Lateral end of the clavicle and acromion process

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3
Q

Upper Trapezius Innervation

A

Spinal accessory n. [CN XI]

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4
Q

Upper Trapezius Action

A
Rotates scapula upward
Elevates the scapula
Assists with:
-Extension of the head/neck
-Lateral flexion of the head/neck
-Rotation of the head/neck to the opposite side
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5
Q

Middle Trapezius Proximal Attachment

A

Spinous processes of T1-5

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6
Q

Middle Trapezius Distal Attachment

A

Acromion process and spine of scapula

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7
Q

Middle Trapezius Innervation

A

Spinal accessory n. [CN XI]

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8
Q

Middle Trapezius Action

A

Adducts the scapula

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9
Q

Lower Trapezius Proximal Attachment

A

Spinous processes of T6-12

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10
Q

Lower Trapezius Distal Attachment

A

Spine of scapula

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11
Q

Lower Trapezius Innervation

A

Spinal accessory n. [CN XI]

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12
Q

Lower Trapezius Action

A

Rotates scapula upward

Depresses the scapula

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13
Q

Latissimus Dorsi Proximal Attachment

A

Spinous process of T6-12, thoracolumbar fascia, posterior iliac crest, and lower ribs

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14
Q

Latissimus Dorsi Distal Attachment

A

Floor of the intertubercular groove of the humberus

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15
Q

Latissimus Dorsi Innervation

A

Thoracodorsal n. [C6,C7,C8]

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16
Q

Latissimus Dorsi Action

A
Extends the shoulder
Adducts the shoulder
Medially rotates the shoulder
Depresses the shoulder girdle
Assists with:
-Extension of the trunk
-Lateral flexion of the trunk
17
Q

Levator Scapulae Proximal Attachment

A

Transverse processes of C1-4

18
Q

Levator Scapulae Distal Attachment

A

Medial border of the scapula between the superior angle and root of the spine

19
Q

Levator Scapulae Innervation

A

Dorsal scapular n. [C5]

Ventral rami of spinal nn. [C3,C4]

20
Q

Levator Scapulae Action

A
Elevates the scapula
Rotates scapula downward
Assists with:
-Lateral flexion of the head/neck
-Extension of the head/neck
-Rotation of the head/neck to the same side
21
Q

Rhomboid Minor Proximal Attachment

A

Ligamentum nuchae and spinous processes of C7-T1

22
Q

Rhomboid Minor Distal Attachment

A

Medial border of the scapula at root of spine

23
Q

Rhomboid Minor Innervation

A

Dorsal scapular n. [*C5]

24
Q

Rhomboid Minor Action

A

Adducts the scapula
Elevates the scapula
Rotates the scapula downward

25
Q

Rhomboid Major Proximal Attachment

A

Spinous process of T2-5

26
Q

Rhomboid Major Distal Attachment

A

Medial border of the scapula between the root of the spine and inferior angle

27
Q

Rhomboid Major Innervation

A

Dorsal scapular n. [*C5]

28
Q

Rhomboid Major Action

A

Adducts the scapula
Elevates the scapula
Rotates the scapula downward