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Anatomy > Exam 1 Back Muscle Actions > Flashcards

Exam 1 Back Muscle Actions Flashcards

1
Q

Elevate Scapular

A

Traps, levator scapulae, rhomboids

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2
Q

Depress Scapular

A

Lats, Traps

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3
Q

Retract Scapular

A

Lats, rhomboids, traps

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4
Q

Superior rotation

A

Traps

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5
Q

Inferior rotation

A

Lats, rhomboids, levator scapular

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6
Q

Serratus posterior inferior and superior

A

-inferior = depress ribs
-superior = elevate ribs

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7
Q

Intrinsic Muscles: Superficial
Group

A

Unilateral Action
Laterally flex neck, rotate
head to same side

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8
Q

Intrinsic Muscles: Intermediate
Group

A

-Bilateral Action: extend
vert column, head, neck
-Unilateral Action:
Laterally flex vert column
to same side

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9
Q

Intrinsic Muscles: Deep Group

A

-Bilateral Action: Extend & stabilize vert column
-Unilateral Action: Rotate vert column, head/neck
contralaterally

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10
Q

Semispinalis

A

Rotate head/neck contralaterally

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11
Q

Multifidus

A

stabilize vertebral column

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12
Q

Rotatores

A

assist with
stabilization & rotation

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13
Q

Deep Accessory Muscles

A

-Interspinales: assists with extension
-Intertransversarii: assist in lateral flexion
-Levatores costarum: elevates ribs, accessory
muscle of respiration, assist in lateral flexion

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14
Q

Head Extension

A

trapezius
levator scapulae
splenius
longissimus
iliocostalis
semispinalis
multifidus

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15
Q

Body Extension

A

erector spinae
multifidus

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16
Q

Lateral Head Flexion

A

splenius
longissimus
iliocostalis
intertransversarii

17
Q

Lateral Body Flexion

A

longissimus
iliocostalis
multifidus

18
Q

Head Rotation

A

splenius (i)
semispinalis (c)
multifidus (c)
rotatores (c)

19
Q

Body Rotation

A

iliocostalis (i)
longissimus (i)
multifidus (c)
rotatores (c)

20
Q

Suboccipital Region

A

Actions: Extension
* RCP major & minor, OCI – ipsilateral rotation
* OCS – lateral flexion

Anatomy (3 decks)

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