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Anatomy 701 > Back Muscles > Flashcards

Back Muscles Flashcards

1
Q

extrinsic muscles control…

A

Upper extremity and Respiration

NOT BACK FUNCTIONS

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2
Q

Intrinsic muscles have two categories:

A

Superficial - PROXIMAL TO DISTAL ATTACHMENT
* Back - erector spinae (INFEROMEDIAL TO SUPROLATERAL)
* neck - splenius cervicis and capitis

Deep - Transversospinalis: from transverse process to spinous process (INFEROLATERAL TO SUPEROMEDIAL)

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3
Q

Superficial intrinsic muscles have what kind of attachment?

A

Proximal to distal

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4
Q

Intrinsic superficial back muscles include _______

A

erector spinae

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5
Q

Erector Spinae is what orientation?

A

Inferomedial to superolateral

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6
Q

Neck intrinsic muscles include _____

A

splenius cervicis and capitis

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7
Q

Deep intrinsic muscle and its direction

A

transversospinalis - from transverse process to spinous process. INFEROLATERAL to SUPEROMEDIAL

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8
Q

Superficial intrinsic muscle

A

erector spinae

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9
Q

Deep intrinsic muscle

A

transversospinalis

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10
Q

Must superficial extrinsic back muscle

A

Trapezius and Latissimus dorsi

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11
Q

Trapezius function:

A

elevation, upward rotation and adduction of scapula

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12
Q

Latissimus dorsi function:

A

IR/EXT/ADD of glenohumeral joint, accessory muscle for expiration

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13
Q

Rhomboid minor function

A

elevation, downward rotation and retraction/adduction of scapula

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14
Q

Rhomboid major function

A

elevation, downward rotation and retraction/adduction of scapula

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15
Q

What are the three muscles in the Iliocostalis

A

Lumborum, Thoracis, and Cervicis

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16
Q

What are the function of the Iliocostalis muscles

A

Back EXT (bilateral), Side Bending or RT (Left & Right)

17
Q

Lumborum and thoracis do what:

A

Depression of rib cage, expiration

18
Q

Iliocostalis is innervated and has blood supply from

A

Dorsal rami of spinal nerve

Anatomy 701 (4 decks)

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