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Evans_Back and Head Muscles Flashcards

1
Q

Rectus Capitis Posterior

major

A

O: C2 spinous process

I: occipital bone (inferior nuchal line, middle third)

A: Bilat- extends the head

Unilat- rotates head to same side

Innervation: C1 (posterior ramus= suboccipital nerve)

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2
Q

Rectus Capitis Posterior

minor

A

O: C1 spinous process

I: occipital bone (inferior nuchal line, inner third)

A: Bilat- extends the head

Unilat- rotates head to same side

Innervation: C1 (posterior ramus= suboccipital nerve)

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3
Q

Longus Capitis

A

O: c3-6 transverse process and anterior tubercles

I: Occiptal bone (basilar part (ANTERIOR)

A: bilat: flexes head

Uni: tilts and slightly rotates head to same side

Inner: Direct branches of cervical plexus (c1-c3)

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4
Q

Longus Cervicis

Vertical part

A

O: C5-T3 anterior sides of vertebral bodies

I: c2-c4 (anterior sides of vertebral bodies)

A:

bi-lateral: flexes cervical spine

unilateral: tilts and rotates cervical spine to same side

Inner: direrct branches of cervical plexus (c2-c6)

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5
Q

Obliquus Capitis

superior

A

O: C1 transverse process

I: Occipital bone (inferior nuchal line inner third)

A.

bi: extends head
uni: titls head to same side, roates to opposite side

INNER: c1 (posterior ramus= suboccipital nerve)

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6
Q

Obliquus Capitis

Inferior

A

O: c2 spinous process

I: C1 transverse process

A. occipital bone

bi: extends head
uni: titls head to same side, roates to opposite side
inner: c1 (posterior ramus= suboccipital nerve)

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7
Q

Longus Cervicis

Superior obique part

A

O: c3-C5 transverse processes, anterior tubercles

I: C1 (transverse process, anterior tubercle)

A.

bi-lateral: flexes cervical spine

unilateral: tilts and rotates cervical spine to same side

INNER: direrct branches of cervical plexus (c2-c6)

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8
Q

Longus Cervicis

Inferior Oblique part

A

O: T1-T3 anterior sides of vertebral bodies

I: C5-C6 (transverse processes anterior tubercles)

A.

bi-lateral: flexes cervical spine

unilateral: tilts and rotates cervical spine to same side

INNER: direrct branches of cervical plexus (c2-c6)

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9
Q

Rectus Capitis Anterior

A

O: C1 Lateral Mass

I: Occipital bone (basilar part) anterior

A: Bilateral: flexion at atlantoccipital joint

Unilateral: lateral fextion at atlanto0occipital joint

Iner: c1 ventral ramus

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10
Q

Rectus Capitis Lateralis

A

O: C1 transverse process

I: same?

A: Bilateral: flexion at atlantoccipital joint

Unilateral: lateral fextion at atlanto0occipital joint

Iner: c1 ventral ramus

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11
Q

Scalene Muscles

Anterior

A

O: c3-c6 (anterior tubercles of transverse processes)

I: 1st rib (scalene tubercle)

A:with ribs Mobile: elevates upper ribs (during forced inspiration)

With ribs Fixed: bends cervical spine to same side (unilaterl), flexis neck (bilateral)

Inervation: Direct branches from cervical and brachial plexuses (C3-C8)

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12
Q

Scalene muscles

Middle

A

O: c1-c2 Transverse processes; c3-c7 posterior tubercles of transvers processes

I: 1st rib (posterior to groove for subclavian artery)

With ribs Fixed: bends cervical spine to same side (unilaterl), flexis neck (bilateral)

Inervation: Direct branches from cervical and brachial plexuses (C3-C8)

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13
Q

Scalene Muscles

Posterior

A

O: c5-c7 posterior tubercles of transverse processes

I:2nd rib (outer surface)

With ribs Fixed: bends cervical spine to same side (unilaterl), flexis neck (bilateral)

Inervation: Direct branches from cervical and brachial plexuses (C3-C8)

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14
Q

Serratus Posterior

superior

A

O:

Nuchal ligament;C7-T3 (spinous processes)

I: 2nd- 4th ribs (superior borders)

A: Elevates Ribs

N: Spinal nerves (T2-T5)

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15
Q

serratus posterior

inferior

A

O: T11-L2 (spinous processes)

I: 8th- 12th ribs (inferior borders, near angles)

A: depresses Ribs

N: Spinal nerves (T9-T12)

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16
Q

Splenius Capitis

A

O: Nuchal ligament; C3-C7 (spinous processes)

I: Occipital bone (lateral superior nuchal line; mastoid process)

A: Bilateral: Extends cervical spine and head

 Unilateral: Lateral Flexion and Rotation to the same side

N: Spinal nn. C1-C6 (posterior rami, lateral branches)

17
Q

splenius cervicis

A

O: T3-T6 (spinous processes)

I: C1-C2 (transvers processes)

A: Bilateral: Extends cervical spine and head

 Unilateral: Lateral Flexion and Rotation to the same    side

N: Spinal nn. C1-C6 (posterior rami, lateral branches)

18
Q

Iliocostalis Cervicis

A

O: 3rd- 7th ribs

I: C4-C6 transverse process

A: Bilateral: Extends spine

Unilateral: Lateral flexion to the same side

N: Spinal nerves (T9-T12)

19
Q

iliocostalis Thoracic

A

O: 3rd- 7th ribs

I: C4-C6 transverse process

A: Bilateral: Extends spine

Unilateral: Lateral flexion to the same side

N: Spinal nerves (T9-T12)

20
Q

iliocostalis lumborum

A

O: Sacrum; iliac crest; thoracolumbar fascia

I: 6th -12th ribs; thoracolumbar fascia (deep layer); upper lumbar vertebrae (transverse processes)

A: Bilateral: Extends spine

Unilateral: Lateral flexion to the same side

N: Spinal nerves (T9-T12)

21
Q

Longissimus

Capitis

A

O: T1-T3 (TP); C4-c7 (TP and articular process)

I: temporal bone (mastoid process)

A: Bilateral: extends head

Unilateral: lateral fexion and rotation to the same side

N: spinal nn c1-l5 Dorsal rami (lateral branches)

22
Q

Longissimus Cervicis

A

O: t1-t6 (TP)

I: c2-c5 (TP)

A: Bilateral: extends spine

Uni- lateral fexion to the same side

N: spinal nn c1-L5; Dorsal rami (lateral branches)

23
Q

Longissimus Thoracis

A

O: sacrum; iliac crest; lumbar vertebrae (SP), lower thoracic vert (TP)

I: 2nd -12th ribs; lumbar vert (costal processes); thoracic vertebrae (TP)

A: Bilateral: extends spine

Uni- lateral fexion to the same side

N: spinal nn c1-L5; Dorsal rami (lateral branches)

24
Q

Spinalis

Cervicis

A

O: C5- T2 (spinous process)

I: c2-c5 spinous process

A: Bilateral: extends cervical and thoracic spine

Unilateral: bens cervicsal and thoracic spine to the same side

N: Spinal nerve (dorsal rami)

25
Spinalis Thoracis
O: T2-T\* (spinous processes, lateral surfaces) I: T2-T8 (SP, laeral surfaces) A: Bilateral: extends cervical and thoracic spine Unilateral: bens cervicsal and thoracic spine to the same side N: Spinal nerve (dorsal rami)
26
Rotatores Brevis Insert and Origin are listed same on these cards
O & I: T1- T12 (between transverse and spinous processes of adjacent vertebrae) Span one segment A: Bilateral: Extends thoracic spine Unilateral: Rotates spine to opposite side N: Spinal nn. (dorsal rami)
27
Rotatores Longi
Bilateral: Extends thoracic spine Unilateral: Rotates spine to opposite side Spinal nn. (dorsal rami) Rotatores Longi T1- T12 (between transverse and spinous processes, skipping one vertebrae) Span two segments
28
Multifidus same I &O on this muscle
O &I: c2- sacrum (between transverse and spinous processes, skipping 2 to 4 verebrae) spans two to four segments A: Bi- extends spine Uni: lateral flexion of spine to same side, rotates to opposite side N: spinall nerve (dorsal rami)
29
Semispinalis Capitis
O: c4-c7 (TP and articular process) I: occipital bone (between superior and inferior nuchal lines) A: bilateral:extends thoracic and cervical spines and head (stabilizes craniovertebral joints) Unilateral: laterl flexion of head, cervical and thoracic spins to same sid, roates to the opposite side N: spinal nn (dorsal rami)
30
Semispinalis Cervicis
O: T1-T6 (TP) I: c2-c5 (SP) A: bilateral:extends thoracic and cervical spines and head (stabilizes craniovertebral joints) Unilateral: laterl flexion of head, cervical and thoracic spins to same sid, roates to the opposite side N: spinal nn (dorsal rami)
31
Semispinalis Thoracis
O: T6-T12 (TP) I: c6-T4 (SP) A: bilateral:extends thoracic and cervical spines and head (stabilizes craniovertebral joints) Unilateral: laterl flexion of head, cervical and thoracic spins to same sid, roates to the opposite side N: spinal nn (dorsal rami)
32
Interspinales
O& I: C1-L5 (between SP of adjacent vert) A: extends spine segmentally (most relevant in cervical and lumbar region) N: spinal nerve (dorsal rami)
33
Inte-Transversarrii
O: C2-L5 (between adjacent verebrae on the TP (both anderior and posterior muscle bellies) A: Bilat: stabilizes and extends the spine segmentally unilat: bends the spine laterally to the same side (most relevant in the cervial and lumbar region) N: spinal nn (dorsal rami)
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Anatomy (11 decks)

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