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ESP SM2 > Anatomy 2 Muscles And Innervation > Flashcards

Anatomy 2 Muscles And Innervation Flashcards

1
Q

Iliocostalis cervicis

A

Origin: angle of ribs 3–6

Insertion: transverse processes of c4–c6

Function: bilateral contracition=spine extension / unilateral contraction=ipsilateral flexion

Innervation: lateral branches of posterior rami of spinal nerves

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2
Q

Ilicostalis thoracis

A

Origin: angle of ribs 7–12

Insertion: angles of ribs 1–6 / transverse process of c7

Function: bilateral contracition=spine extension / unilateral contraction=ipsilateral flexion

Innervation: lateral branches of posterior rami of spinal nerves

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3
Q

Iliocostalis lumbarum

A

Origin: lateral crest of sacrum / medial end of iliac crest / thoracolumbar fascia

Insertion: angle of ribs 5–12 / transverse processes of L1–L4

Function: bilateral contracition=spine extension / unilateral contraction=ipsilateral flexion

Innervation: lateral branches of posterior rami of spinal nerves

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4
Q

Longissimus capitis

A

Origin: transverse processes of C4–T5

Insertion: mastoid process of temporal bone

Function: bilateral contraction= extension of head and neck / unilateral contraction= lateral flexion and rotation of head

Innervation: lateral branches of posterior rami of spinal nerves

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5
Q

Longissimus cervicis

A

Origin: transverse processes of T1–T5

Insertion: transverse processes of C2–C6

Function: bilateral contraction= spine extension / unilateral contraction= lateral spine flexion

Innervation: lateral branches of posterior rami of spinal nerves

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6
Q

Longissimus thoracis (lumbar)

A

Origin:
Lumbar intermusc. aponeurosis,
anteromedial surface of ilium,
Post sacroiliac ligament

insertion:
Accessory and transverse processes
of L1-L5

Function: Bilateral contraction= Extension of spine
Unilateral contraction= Lateral flexion of spine

innervation: Lateral branches of post. rami of spinal nerves

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7
Q

longissimus thoracis (thoracic)

A

Origin: Spinous and transverse processes of L1-L5, Median sacral crest, Post surface of sacrum , Post iliac crest

Insertion: Transverse process of T1-T12, Angles of ribs 7-12

Function: Bilateral contraction= Ext of spine
Unilateral contraction=Lateral flex of spine

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8
Q

Splenius Capitis

A

Origin: Spinous processes of C7-T3, nuchal
ligament

Insertion: Lat sup nuchal line of occipital bone, Mastoid process of temporal bone

Function:Bilateral contraction =Extends head/neck
Unilateral contraction=Lat flex and rotat of head

Innervation: Lat branches of post rami of spinal nerves C2-C3

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9
Q

Splenius cervicis

A

Origin: Spinous processes of T3-T6

Insertion: Transverse processes of C1-C3

Function: Bilateral contraction =Ext neck
Unilateral contraction - Lat flex and rotat of neck (ipsilateral)

Innervation: Lat branches of post rami of lower cervical spinal nerves

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10
Q

Anterior/posterior cervical intertransversarii

A

origin: Sup border of transverse processes of C2-T1

Insertion: Inf border of transverse process of sup adjacent cervical vertebra

Function: Assists in lat flex of spine;
Stabilises spine

Innervation: Ant and post rami of cervical spinal nerves

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11
Q

Medial lumbar intertransversarii

A

Origin: Accessory processes of L1-L4

Insertion: Mammillary process of succeeding vertebrae

Function: Assists in lat flex of spine;
Stabilises spine

Innervation: Ant rami of lumbar spinal nerves

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12
Q

Lateral lumbar intertransversarii

A

Origin: Transverse and accessory processes of L1-L4

Insertion: Transverse process of succeeding vertebra

Function: Assists in lat flex of spine; Stabilises spine

Innervation: Anterior rami of lumbar spinal nerves

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13
Q

Levatores costarum

A

Origin: Transverse process of C7-T11

Insertion: Superior border/external surface of rib (one level below origin)

Function: Elevation of ribs; Rotation of thoracic spine

Innervation: Posterior rami of spinal nerves T1-T12

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14
Q

Interspinales cervicis

A

Origin: Superior aspect of spinous processes of C2-C7

Insertion: Inferior aspect of spinous processes of C1-C6

Function: Ext of cervical spine

Innervation: Posterior rami of spinal nerves

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15
Q

Interspinales thoracis

A

Origin: Superior aspect of spinous process of T2, T11 & T12

Insertion: Inferior aspect of spinous processes of T1, T10 & T11

Function: Extension of thoracic spine

Innervation: Posterior rami of spinal nerves

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16
Q

Interspinales lumborum

A

Origin: Superior aspects of spinous processes of L2-L5

Insertion: Inferior aspects of spinous processes of L1-L4

Function: Extension of lumbar spine

Innervation: Posterior rami of spinal nerves

17
Q

Spinalis cervicis

A

Origin: Spinous processes of C7-T1, Nuchal ligament

Insertion: Spinous processes of C2-C4

Function:
Bilateral contraction - Extension of cervical spine
Unilateral contraction - Lateral flexion of cervical spine (ipsilateral)

Innervation: Lateral branches of posterior rami of spinal nerves

18
Q

Spinalis thoracis

A

Origin: Spinous processes of T11-L2

Insertion: Spinous processes of T2-T8

Function:
Bilateral contraction - Extension of thoracic spine
Unilateral contraction - Lateral flexion of thoracic spine (ipsilateral)

Innervation: Lateral branches of posterior rami of spinal nerves

19
Q

Rotatores breves

A

Origin: Transverse processes of T2-T12

Insertion: Laminae/Spinous process of vertebra (1 level above origin)

Function:
Bilateral contraction - Extension of thoracic spine
Unilateral contraction - Rotation of thoracic spine (contralateral)

Innervation: Medial branches of posterior rami of spinal nerves

20
Q

Rotatores longi

A

Origin: Transverse processes of thoracic vertebrae

Insertion: Laminae/Spinous process of vertebra (2 levels above origin)

Function:
Bilateral contraction - Extension of thoracic spine
Unilateral contraction - Rotation of thoracic spine (contralateral)

Innervation: Medial branches of posterior rami of spinal nerves

21
Q

Multifidus cervicis

A

Origin: Superior articular processes of C4-C7

Insertion: Lateral aspect and tips of spinous processes of vertebrae 2-5 levels above origin

Function: Bilateral contraction - Ext of spine
Unilateral contraction - Lat flex of spine (ipsilateral), Rotation of spine (contralateral)

Innervation: Medial branches of posterior rami of spinal nerves

22
Q

Multifidus thoracis

A

Origin: Transverse process of thoracic vertebrae

Insertion: Lateral aspect and tips of spinous processes of vertebrae 2-5 levels above origin

Function: Bilateral contraction - Ext of spine
Unilateral contraction - Lat flex of spine (ipsilateral), Rotation of spine (contralateral)

Innervation: Medial branches of posterior rami of spinal nerves

23
Q

Multifidus lumborum

A

Origin: Mammillary processes of lumbar vertebrae, Posterior aspect of sacrum, (PSIS), Posterior sacroiliac ligament

Insertion: Lateral aspect and tips of spinous processes of vertebrae 2-5 levels above origin

Function: Bilateral contraction - Ext of spine
Unilateral contraction - Lat flex of spine (ipsilateral), Rotation of spine (contralateral)

Innervation: Medial branches of posterior rami of spinal nerves

24
Q

Semispinalis capitis

A

Origin: Articular processes of C4-C7, Transverse processes of T1-T6

Insertion: Btw superior and inferior nuchal lines of occipital bone

Function: Bilateral contraction - Extension of head, cervical and thoracic spine
Unilateral contraction - Lateral flexion of head, cervical and thoracic spine (ipsilateral), Rotation of head, cervical and thoracic spine (contralateral)

Innervation: Descending branches of greater occipital nerve (C2) and spinal nerve C3

25
Q

Semispinalis cervicis

A

Origin: Transverse processes of T1-T6

Insertion: Spinous processes of C2-C5

Function: Bilateral contraction - Extension of head, cervical and thoracic spine
Unilateral contraction - Lateral flexion of head, cervical and thoracic spine (ipsilateral), Rotation of head, cervical and thoracic spine (contralateral)

Innervation: Medial branches of posterior rami of spinal nerves

26
Q

Semispinalis thoracis

A

Origin: Transverse processes of T6-T10

Insertion: Spinous processes of C6-T4

Function: Bilateral contraction - Extension of head, cervical and thoracic spine
Unilateral contraction - Lateral flexion of head, cervical and thoracic spine (ipsilateral), Rotation of head, cervical and thoracic spine (contralateral)

Innervation: Medial branches of posterior rami of spinal nerves

27
Q

Rectus capitis posterior major

A

Origin: Spinous process of axis

Insertion: Lateral part of inferior nuchal line

Function: Bilateral contraction - Atlantooccipital joint: Head extension
Unilateral contraction - Atlantoaxial joint: Head rotation (ipsilateral)

Innervation: Posterior ramus of spinal nerve C1 (suboccipital nerve)

28
Q

Rectus capitis posterior minor

A

Origin: Posterior tubercle of atlas

Insertion: Medial part of inferior nuchal line

Function: Atlantooccipital joint: Head extension

Innervation: Posterior ramus of spinal nerve C1 (suboccipital nerve)

29
Q

Obliquus capitis superior

A

Origin: Transverse process of atlas

Insertion: Occipital bone (between superior and inferior nuchal lines)

Function: Bilateral contraction -Atlantooccipital joint: Head extension
Unilateral contraction -Atlantoaxial joint: Head rotation (contralateral), Head lateral flexion (ipsilateral)

Innervation: Posterior ramus of spinal nerve C1 (suboccipital nerve)

30
Q

Obliquus capitis inferior

A

Origin: Transverse process of atlas

Insertion: Occipital bone (between superior and inferior nuchal lines)

Function: Bilateral contraction -Atlantooccipital joint: Head extension
Unilateral contraction -Atlantoaxial joint: Head rotation (ipsilateral)

Innervation: Posterior ramus of spinal nerve C1 (suboccipital nerve)

ESP SM2 (3 decks)

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