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PT 6015 Gross Anatomy > Intrinsic Back Muscle POINA's > Flashcards

Intrinsic Back Muscle POINA's Flashcards

1
Q

Origin of Splenius (capitis and cervicis)

A

Nuchal Ligament
SP of C7-T6

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2
Q

Insertion of Splenius Capitis

A

Mastoid process
Superior nuchal line
Fibers run superolaterally!

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3
Q

Insertion of Splenius Cervicis

A

TP of C1-C4

Same as levator! Travel buddies!

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4
Q

Nerve Innervation of Splenius (both)

A

Posterior/Dorsal Rami of Spinal Nerves

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5
Q

Muscle Action of Splenius (both)

A

Bilateral: head/neck EXTENSION

Unilateral:
IPSILATERAL head ROTATION
LATERAL neck FLEXION

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6
Q

Purposeful Activity of Splenius (both)

A

Driving, communication (shaking/nodding head)

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7
Q

Purposeful Activity of Iliocostalis

A

Maintaining upright posture for ADL’s

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8
Q

Origin of Iliocostalis

A

Thoracolumbar fascia / Common tendon which attaches to:
-SP of Lumbar spine and T11-12
-Iliac crest
-Posterior surface of sacram

SIP!

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9
Q

Insertion of Iliocostalis

A

-Cervical TP
-Lower rib angles

Include new last name!

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10
Q

Nerve innervation of Iliocostalis

A

Dorsal/Posterior Rami of Spinal Nerves

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11
Q

Action of Iliocostalis

A

Bilateral: Vertebral column extension

Unilateral: IPSILATERAL vertebral column LATERAL FLEXION

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12
Q

Purposeful Activity of Longissimus

A

Upright posture for ADL’s

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13
Q

Origin of Longissimus

A

Thoracolumbar / Common Tendon
-SP of T11-12 and lumbar spine
-Iliac crest
-Posterior surface of sacrum

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14
Q

Insertion of Longissimus

A

-B/w rib tubercles and Thoracic TP
-Mastoid Process

Include new last name!

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15
Q

Nerve innervation of Longissimus

A

Dorsal/Posterior Rami of Spinal Nerves

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16
Q

Action of Longissimus

A

Bilateral: Vertebral column EXTENSION

Unilateral: IPSILATERAL vertebral column LATERAL FLEXION

17
Q

Purposeful Activity of Spinalis

A

Maintaining upright posture for ADL’s

18
Q

Origin of Spinalis

A

Thoracolumbar fascia / common tendon
-SP of T11-T12
-Iliac crest
-Posterior surface of sacrum

19
Q

Insertion of Spinalis

A

Upper thoracic and cervical SP

Include new last name!

20
Q

Nerve innervation of Spinalis

A

Dorsal/posterior Rami of Spinal Nerves

21
Q

Action of Spinalis

A

Bilateral: EXTENSION of vertebral column

Unilateral: IPSILATERAL vertebral column LATERAL FLEXION

22
Q

Purposeful activity of Rotatores

A

Deep postural stability

23
Q

Origin of Rotatores

A

TP of the vertebrae
Most prominent in THORACIC spine!

24
Q

Insertion of Rotatores

A

SP of vertebrae through C2
Two types! Spans 1-2 segments
-Brevus = 1
-Longus = 2

25
Q

Nerve innervation of Rotatores

A

Dorsal/posterior rami of spinal nerves

26
Q

Action of Rotatores

A

Bilateral: Vertebral column LOCAL extension.

Unilateral: CONTRALATERAL ROTATION of vertebral column

May also act as proprioception

27
Q

Purposeful activity of multifidus

A

Deep postural stability

28
Q

Origin of multifidus

A

S - Sacro Iliac (SI) Ligaments
T - TP of T1-T3
A - aponeurosis of erector spinae
A - Articular processes of C4-C7
M - Mammillary processes of lumbar vertebrae
P - PSIS
P - Posterior Sacrum

Remember Stamp!

29
Q

Insertion of multifidus

A

Entire length of SP’s
SPANS 2-4 SEGMENTS
Fibers run superomedially, and are MOST PROMINENT IN LUMBAR REGION

30
Q

Nerve Innervation of Multifidus

A

Dorsal/Posterior Rami of Spinal Nerves

31
Q

Action of Multifidus

A

Bilateral:
-Vertebral Column LOCAL EXTENSION
-STABILIZES vertebrae during local movement

Unilateral:
-CONTRALATERAL ROTATION of vertebral column

32
Q

Purposeful activity of Semispinalis

A

Looking overhead, using a computer

33
Q

Origin of Semispinalis

A

-TP of C4-T12

34
Q

Insertion of Semispinalis

A

Fibers run superomedially to occipital bone
SP of thoracic and cervical spine

SPANS 4-6 SEGMENTS
MOST PROMINENT IN CERVICAL SPINE
DONT FORGET CAPITIS/CERVICIS/THORACIS

35
Q

Nerve innervation of Semispinalis

A

CERVICAL Dorsal/Posterior Rami of CERVICAL Spinal Nerves

36
Q

Action of Semispinalis

A

Bilateral:
-Head/neck/thoracic spine EXTENSION

Unilateral:
-Head/neck/thoracic spine CONTRALATERAL ROTATION

PT 6015 Gross Anatomy (5 decks)

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