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Muscle Anatomy > BACK & SPINAL CORD: Deep back muscles > Flashcards

BACK & SPINAL CORD: Deep back muscles Flashcards

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1
Q

SUPERFICIAL LAYER

Splenius capitis - origin

A

Spinous processes of vertebrae C7-T3, nuchal ligament

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2
Q

SUPERFICIAL LAYER

Splenius capitis - insertion

A

Lateral superior nuchal line of occipital bone, Mastoid process of temporal bone

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3
Q

SUPERFICIAL LAYER

Splenius capitis - innervation

A

Lateral branches of posterior rami of spinal nerves C2-C3

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4
Q

SUPERFICIAL LAYER

Splenius capitis - function

A

Bilateral contraction - Extends head/neck
Unilateral contraction - Lateral flexion and rotation
of head (ipsilateral)

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5
Q

SUPERFICIAL LAYER

Splenius cervicis - origin

A

Spinous processes of vertebrae T3-T6

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6
Q

SUPERFICIAL LAYER

Splenius cervicis - insertion

A

Transverse processes of vertebrae C1-C3

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7
Q

SUPERFICIAL LAYER

Splenius cervicis - innervation

A

Lateral branches of posterior rami of lower cervical spinal nerves

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8
Q

SUPERFICIAL LAYER

Splenius cervicis - function

A

Bilateral contraction - Extends neck
Unilateral contraction - Lateral flexion and rotation
of neck (ipsilateral)

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9
Q

INTERMEDIATE LAYER

Erector spinae group: Iliocostalis cervicis - origin

A

Angle of ribs 3-6

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10
Q

INTERMEDIATE LAYER

Erector spinae group: Iliocostalis thoracis - origin

A

Angle of ribs 7-12

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11
Q

INTERMEDIATE LAYER

Erector spinae group: Iliocostalis lumborum - origin

A

Lateral crest of sacrum, Medial end of iliac crest, Thoracolumbar fascia

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12
Q

INTERMEDIATE LAYER

Erector spinae group: Iliocostalis cervicis - insertion

A

Transverse processes of vertebrae C4-C6

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13
Q

INTERMEDIATE LAYER

Erector spinae group: Iliocostalis thoracis - insertion

A

Angles of ribs 1-6, Transverse process of vertebra C7

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14
Q

INTERMEDIATE LAYER

Erector spinae group: Iliocostalis lumborum - insertion

A

Angle of ribs 5-12, Transverse processes of vertebrae L1-L4 (+ Adjacent thoracolumbar fascia)

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15
Q

INTERMEDIATE LAYER

Erector spinae group: Iliocostalis - innervation

A

Lateral branches of posterior rami of spinal nerves

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16
Q

INTERMEDIATE LAYER

Erector spinae group: Iliocostalis - function

A

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

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17
Q

INTERMEDIATE LAYER

Erector spinae group: Longissimus capitis - origin

A

Transverse processes of vertebrae C4-T5

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18
Q

INTERMEDIATE LAYER

Erector spinae group: Longissimus cervicis - origin

A

Transverse processes of vertebrae T1-T5

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19
Q

INTERMEDIATE LAYER

Erector spinae group: Longissimus thoracis [lumbar part] - origin

A

Lumbar intermuscular aponeurosis, medial part of sacropelvic surface of ilium, Posterior sacroiliac ligament

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20
Q

INTERMEDIATE LAYER

Erector spinae group: Longissimus thoracis [thoracic part] - origin

A

Spinous and transverse processes of vertebrae L1-L5, Median sacral crest, Posterior surface of sacrum, Posterior iliac crest

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21
Q

INTERMEDIATE LAYER

Erector spinae group: Longissimus capitis - insertion

A

Mastoid process of temporal bone

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22
Q

INTERMEDIATE LAYER

Erector spinae group: Longissimus cervicis - insertion

A

Transverse processes of vertebrae C2-C6

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23
Q

INTERMEDIATE LAYER

Erector spinae group: Longissimus thoracis [lumbar part] - insertion

A

Accessory and transverse processes of vertebrae L1-L5

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24
Q

INTERMEDIATE LAYER

Erector spinae group: Longissimus thoracis [thoracic part] - insertion

A

Transverse process of vertebrae T1-T12, Angles of ribs 7-12

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25
INTERMEDIATE LAYER Erector spinae group: Longissimus - innervation
Lateral branches of posterior rami of spinal nerves
26
INTERMEDIATE LAYER Erector spinae group: Longissimus - function
Bilateral contraction - Extension of spine Unilateral contraction - Lateral flexion of spine (ipsilateral) Longissimus capitis only: Bilateral contraction - Extension of head and neck Unilateral contraction - Lateral flexion and rotation of head (ipsilateral)
27
INTERMEDIATE LAYER Erector spinae group: Spinalis cervicis - origin
Spinous processes of vertebrae C7-T1, Nuchal ligament
28
INTERMEDIATE LAYER Erector spinae group: Spinalis thoracis - origin
Spinous processes of vertebrae T11-L2
29
INTERMEDIATE LAYER Erector spinae group: Spinalis cervicis - insertion
Spinous processes of vertebrae C2-C4
30
INTERMEDIATE LAYER Erector spinae group: Spinalis thoracis - insertion
Spinous processes of vertebrae T2-T8
31
INTERMEDIATE LAYER Erector spinae group: Spinalis - innervation
Lateral branches of posterior rami of spinal nerves
32
INTERMEDIATE LAYER Erector spinae group: Spinalis - function
Bilateral contraction - Extension of cervical and thoracic spine Unilateral contraction - Lateral flexion of cervical and thoracic spine (ipsilateral)
33
DEEP LAYER Transversospinales group: Semispinalis capitis - origin
Articular processes of vertebrae C4-C7, Transverse processes of vertebrae T1-T6
34
DEEP LAYER Transversospinales group: Semispinalis cervicis - origin
Transverse processes of vertebrae T1-T6
35
DEEP LAYER Transversospinales group: Semispinalis thoracis - origin
Transverse processes of vertebrae T6-T10
36
DEEP LAYER Transversospinales group: Semispinalis capitis - insertion
Between superior and inferior nuchal lines of occipital bone
37
DEEP LAYER Transversospinales group: Semispinalis cervicis - insertion
Spinous processes of vertebrae C2-C5
38
DEEP LAYER Transversospinales group: Semispinalis thoracis - insertion
Spinous processes of vertebrae C6-T4
39
DEEP LAYER Transversospinales group: Semispinalis capitis - innervation
Descending branches of greater occipital nerve (C2) and spinal nerve C3
40
DEEP LAYER Transversospinales group: Semispinalis cervicis/thoracis - innervation
Medial branches of posterior rami of spinal nerves
41
DEEP LAYER Transversospinales group: Semispinalis - 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)
42
DEEP LAYER Transversospinales group: Multifidus cervicis - origin
Superior articular processes of vertebrae C4-C7
43
DEEP LAYER Transversospinales group: Multifidus thoracis - origin
Transverse process of thoracic vertebrae
44
DEEP LAYER Transversospinales group: Multifidus lumborum - origin
Mammillary processes of lumbar vertebrae, Posterior aspect of sacrum, Posterior superior iliac spine (PSIS) of ilium, Posterior sacroiliac ligament
45
DEEP LAYER Transversospinales group: Multifidus - insertion
Lateral aspect and tips of spinous processes of vertebrae 2-5 levels above origin
46
DEEP LAYER Transversospinales group: Multifidus - innervation
Medial branches of posterior rami of spinal nerves
47
DEEP LAYER Transversospinales group: Multifidus - function
Bilateral contraction - Extension of spine Unilateral contraction - Lateral flexion of spine (ipsilateral), Rotation of spine (contralateral)
48
DEEP LAYER Transversospinales group: Rotatores breves - origin
Transverse processes of vertebrae T2-T12
49
DEEP LAYER Transversospinales group: Rotatores longi - origin
Transverse processes of thoracic vertebrae
50
DEEP LAYER Transversospinales group: Rotatores breves - insertion
Laminae/Spinous process of vertebra (1 level above origin)
51
DEEP LAYER Transversospinales group: Rotatores longi - insertion
Laminae/Spinous process of vertebra (2 levels above origin)
52
DEEP LAYER Transversospinales group: Rotatores - innervation
Medial branches of posterior rami of spinal nerves
53
DEEP LAYER Transversospinales group: Rotatores - function
Bilateral contraction - Extension of thoracic spine Unilateral contraction - Rotation of thoracic spine (contralateral)
54
DEEP LAYER Interspinales cervicis - origin
Superior aspect of spinous processes of vertebrae C3-T1
55
DEEP LAYER Interspinales thoracis - origin
Superior aspect of spinous process of vertebrae T2, T11 & T12 (variable)
56
DEEP LAYER Interspinales lumborum - origin
Superior aspects of spinous processes of vertebrae L2-L5
57
DEEP LAYER Interspinales cervicis - insertion
Inferior aspect of spinous processes of vertebrae C2-C7
58
DEEP LAYER Interspinales thoracis - insertion
Inferior aspect of spinous processes of vertebrae T1, T10 & T11
59
DEEP LAYER Interspinales lumborum - insertion
Inferior aspects of spinous processes of vertebrae L1-L4
60
DEEP LAYER Interspinales - innervation
Posterior rami of spinal nerves
61
DEEP LAYER Interspinales - function
Extension of cervical and lumbar spine
62
DEEP LAYER Anterior/posterior cervical intertransversarii - origin
Superior border of transverse processes of vertebrae C2-T1
63
DEEP LAYER Medial lumbar intertransversarii - origin
Accessory processes of vertebrae L1-L4
64
DEEP LAYER Lateral lumbar intertransversarii - origin
Transverse and accessory processes of vertebrae L1-L4
65
DEEP LAYER Anterior/posterior cervical intertransversarii - insertion
Inferior border of transverse process of superior adjacent cervical vertebra
66
DEEP LAYER Medial lumbar intertransversarii - insertion
Mammillary process of succeeding vertebra
67
DEEP LAYER Lateral lumbar intertransversarii - insertion
Transverse process of succeeding vertebra
68
DEEP LAYER Anterior/posterior cervical intertransversarii - innervation
Anterior and posterior rami of cervical spinal nerves
69
DEEP LAYER Lumbar intertransversarii - innervation
Anterior rami of lumbar spinal nerves
70
DEEP LAYER Intertransversarii - function
Assists in lateral flexion of spine; Stabilises spine
71
DEEP LAYER Levatores costarum - origin
Transverse process of vertebrae C7-T11
72
DEEP LAYER Levatores costarum - insertion
Superior border/external surface of rib (one level below origin)
73
DEEP LAYER Levatores costarum - innervation
Posterior rami of spinal nerves T1-T12
74
DEEP LAYER Levatores costarum - function
Elevation of ribs; Rotation of thoracic spine

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