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MSK I > Back: Origins, Insertions, Actions, Innervations > Flashcards

Back: Origins, Insertions, Actions, Innervations Flashcards

1
Q

Trapezius

A

A: lateral flexion of neck, rotation of head, scapula retraction, elevate scapula, depress scapula
N: spinal accessory nerve (CN XI)

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2
Q

Rhomboid major

A

A: retract and elevate the scapula inferior to scapular spine, rotate glenoid cavity inferiorly
N: dorsal scapular nerve

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3
Q

Rhomboid minor

A

A: retract and elevate scapula, rotate glenoid cavity inferiorly
N: dorsal scapular nerve

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4
Q

Levator scapulae

A

A: elevate scapula, rotate glenoid cavity inferiorly, extend and laterally flex the neck (when scapula is fixed)
N: Dorsal scapular nerve

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5
Q

Serratus posterior superior

A

A: elevate the ribs with forced inspiration
N: intercostal nerve

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6
Q

Serratus posterior inferior

A

A: depress ribs with forced expiration
N: anterior rami T9-T12

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7
Q

Splenius capitus

A

A: neck extension when working bilaterally, lateral neck flexion and face rotation when working unilaterally
N: posterior rami C3-C5

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8
Q

Splenius Cervicus

A

A: neck extension when working bilaterally, lateral flexion of neck and face rotation when working unilaterally
N: posterior rami C5-7

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9
Q

Iliocostalis lumborum

A

A: maintain erect posture and extend vertebral column and head when working bilaterally, lateral flexion of vertebral column when working unilaterally
N: posterior rami

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10
Q

Iliocostalis thoracis

A

A: maintain erect posture and extend vertebral column and head when working bilaterally, lateral flexion of vertebral column when working unilaterally
N: posterior rami

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11
Q

Iliocostalis cervicis

A

A: maintain erect posture and extend vertebral column and head when working bilaterally, lateral flexion of vertebral column when working unilaterally
N: posterior rami

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12
Q

Longissimus thoracis

A

A: maintain erect posture and extend vertebral column and head when working bilaterally, lateral flexion of vertebral column when working unilaterally
N: posterior rami

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13
Q

Longissimus cervicis

A

A: maintain erect posture and extend vertebral column and head when working bilaterally, lateral flexion of vertebral column when working unilaterally
N: posterior rami

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14
Q

Longissimus capitis

A

A: extension of neck working bilaterally, laterally flex neck and rotate face while working unilaterally
N: posterior rami

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15
Q

Spinalis thoracis

A

A: maintain erect posture and extend vertebral column and head when working bilaterally, lateral flexion of vertebral column when working unilaterally
N: posterior rami

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16
Q

Spinalis cervicis

A

A: maintain erect posture and extend vertebral column and head when working bilaterally, lateral flexion of vertebral column when working unilaterally
N: posterior rami

17
Q

Semispinalis thoracis

O, I, A, N

A

O: transverse processes (T6-T12)
I: spinous processes (C6-T4)
A: spinal extension and rotation
N: posterior rami

18
Q

Semispinalis cervicis

A

A: spinal extension and rotation

N; posterior rami

19
Q

Semispinalis capitis

A

A: extent head, rotate face away
N: posterior rami

20
Q

Multifidus

O, I, A, N

A 
O: lumbar spine: mamillary processes
thoracic spine: transverse processes
cervical spine: articular processes
I: 3 spinous processes superior 
A: spinal extension and rotation away
N: posterior rami
21
Q

Rotatores longus

O, I, A, N

A

O: transverse process
I: 2 spinous processes superior
A: spinal extension, spine rotation away
N: posterior rami

22
Q

Rotatores brevis

O, I, A, N

A

O: transverse process
I: 1 spinous process superior
A: spinal extension and rotation away
N: posterior rami

23
Q

Interspinalis

O, I, A, N

A

O: spinous process
I: adjacent spinous process
A: spinal extension
N: posterior rami

24
Q

Intertransversarii

O, I, A, N

A

O: transverse process
I: adjacent transverse process
A: laterally flex spine
N: posterior portion (posterior rami) and anterior portion (anterior rami)

25
Q

Levator costarum longus

O, I, A, N

A

O: transverse process
I: 2nd rib inferior to origin
A: elevate ribs
N: posterior rami

26
Q

Levator costarum brevis

O, I, A, N

A

O: transverse processes C7-T11
I: adjacent rib inferior to origin
A: rib elevation
N: posterior rami

27
Q

Rectus capitus posterior major

O, I, A, N

A

O: spinous process C2
I: lateral portion inferior nuchal line
A: head extension and face rotations outward
N: Suboccipital nerve

28
Q

Rectus capitis posterior minor

O, I, A, N

A

O: posterior tubercle C1
I: below inferior nuchal line
A: head extension
N: Suboccipital nerve

29
Q

Obliqqus capitis inferior

O, I, A, N

A

O: spinous process C2
I: transverse process C1
A: face rotation toward
N: Suboccipital nerve

30
Q

Obliquus capitis superior

O, I, A, N

A

O: transverse process C1
I: between superior and inferior nuchal lines
A: extend and laterally flex head
N: suboccipital nerve

MSK I (15 decks)

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