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Intrinsic Muscles Of Axial Skeleton Flashcards

1
Q

Origin of INTERCOSTALES

A

INTERNAL and EXTERNAL INTERCOSTALES - cranial borders of the ribs

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2
Q

Insertion of INTERCOSTALES

A

INTERNAL INTERCOSTALES - caudal borders of preceding ribs and cartilage

EXTERNAL INTERCOSTALES - cranial borders and lateral surfaces of succeeding ribs

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3
Q

Innervation of INTERCOSTALES

A

Intercostal nerves

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4
Q

Action of INTERCOSTALES

A

Support rib cage and aid respiration

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5
Q

Origin of LEVATOR COSTARUM

A

Transverse processes of thoracic vertebrae

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6
Q

Insertion of LEVATOR COSTARUM

A

Lateral surface of proximal ends of ribs 2-17

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7
Q

Innervation of LEVATOR COSTARUM

A

Intercostal nerve

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8
Q

Action of LEVATOR COSTARUM

A

Pull ribs cranially, aiding with respiration

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9
Q

Origin of RECTUS CAPITIS VENTRALIS

A

Ventral arch of Atlas

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10
Q

Insertion of RECTUS CAPITIS VENTRALIS

A

Two basilar tubercles on base of skull at junction of basioccipital bone and sphenoid body

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11
Q

Innervation of RECTUS CAPITIS VENTRALIS

A

Ventral branch of C1 nerve

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12
Q

Action of RECTUS CAPITIS VENTRALIS

A

Flexes atlanto-occipital joint, or (when used unilaterally) inclines head towards contracted side

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13
Q

Origin of RECTUS CAPITIS LATERALIS

A

Ventral arch of Atlas

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14
Q

Insertion of RECTUS CAPITIS LATERALIS

A

Paracondylar process of occipital bone

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15
Q

Innervation of RECTUS CAPITIS LATERALIS

A

Ventral branch of C1 nerve

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16
Q

Action of RECTUS CAPITIS LATERALIS

A

Flexes Atlanto-occipital joint, and (when contracted unilaterally) inclines head to side of contraction

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17
Q

Origin of RECTUS CAPITIS DORSALIS MINOR

A

Dorsal tubercle of atlas

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18
Q

Insertion of RECTUS CAPITIS DORSALIS MINOR

A

occipital bone

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19
Q

Innervation of RECTUS CAPITIS DORSALIS MINOR

A

Dorsal branch of C1 nerve

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20
Q

Action of RECTUS CAPITIS DORSALIS MINOR

A

Assists RECTUS CAPITIS DORSALIS MAJOR to extend the head

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21
Q

Origin of RECTUS CAPITIS DORSALIS MAJOR

A

Dorsal edge of spinous process of Axis

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22
Q

Insertion of RECTUS CAPITIS DORSALIS MAJOR

A

Nuchal crest

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23
Q

Innervation of RECTUS CAPITIS DORSALIS MAJOR

A

Dorsal branch of C1 nerve

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24
Q

Action of RECTUS CAPITIS DORSALIS MAJOR

A

Extends the head

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25
Origin Of MULTIFIDUS CERVICIS
Articulate processes of the last 4-5 Cervical vertebrae and T1
26
Insertion of MULTIFIDUS CERVICIS
Spinous process and articulate process of the more cranial vertebrae
27
Innervation of MULTIFIDUS CERVICIS
Dorsal branches of C2-C7
28
Action of MULTIFIDUS CERVICIS
Spinal stabiliser. Extend the neck. Unilateral contraction twists neck towards side of contraction
29
Origin of MULTIFIDUS THORACIS ET LUMBORUM
Articular processes of the thoracic, lumbar and sacral vertebrae
30
Insertion of MULTIFIDUS THORACIS ET LUMBORUM
Normally insert on summits of spinous processes or preceding vertebrae. First 8 T vertebrae: inserts on side of spinous processes
31
Inner action of MULTIFIDUS THORACIS ET LUMBORUM
Dorsal branches of thoracic and lumbar nerves
32
Action of MULTIFIDUS THORACIS ET LUMBORUM
Spinal stabiliser. Aid in extension and lateral flexion of spinal column
33
Origin of OBLIQUUS CAPITIS CRANIALIS
Entire cranial edge and adjacent ventral surface of the wing of atlas
34
Insertion of OBLIQUUS CAPITIS CRANIALIS
Nuchal crest of occipital bone
35
Innervation of OBLIQUUS CAPITIS CRANIALIS
Dorsal branch of C1 nerve
36
Action of OBLIQUUS CAPITIS CRANIALIS
Extend atlanto-occipital joint
37
Origin of OBLIQUUS CAPITIS CAUDALIS
Lateral surface of spinous processes and Articular processes of axis
38
Insertion of OBLIQUUS CAPITIS CAUDALIS
Dorsal surface of wing of atlas
39
Innervation of OBLIQUUS CAPITIS CAUDALIS
Dorsal branch of C2 nerve
40
Action of OBLIQUUS CAPITIS CAUDALIS
Rotates atlas and head to the side of contraction. Assists in extending atlantoaxial joint (C1-C2)
41
Origin of LONGUS CAPITIS
Transverse processes of C3-C5
42
Insertion of LONGUS CAPITIS
Two basilar tubercles at junction of basioccipital and sphenoid body
43
Innervation of LONGUS CAPITIS
Ventral branches of cervical nerves
44
Action of LONGUS CAPITIS
Neck is flexed at nuchal curve. Unilateral contraction bends neck laterally towards side of contraction
45
Origin of SPINALIS CERVICIS ET THORACIS
T part - spinous processes of lumbar and last 6 T-vertebrae. C part - spinous processes of T8-T5
46
Insertion of SPINALIS CERVICIS ET THORACIS
T part - spinous processes of first 6-7 T-vertebrae and last 4-5 C-vertebrae. C part - spinous processes of C7-C4
47
Innervation of SPINALIS CERVISIC ET THORACIS
Dorsal branches of cervical, thoracic and lumbar nerves
48
Action of SPINALIS CERVICIS ET THORACIS
Both parts extend T-spine C-part assists in cervical extension T-part extends lumbar spine
49
Origin of QUADRATUS LUMBORUM
T17-T18, lies ventral to vertebra column
50
Insertion of QUADRATUS LUMBORUM
Ventral sacral wings and ventral sacral ligaments
51
Innervation of QUADRATUS LUMBORUM
Intercostal and ventral branches of lumbar nerves
52
Action of QUADRATUS LUMBORUM
Unilateral contraction bends lumbar sound laterally. Stabilises lumbar spine and fixes last 2 ribs
53
Origin of SEMISPINALIS CAPITIS
Spinous processes T3-T5 via dorsoscapular ligament. Transverse processes of T1-T17. Articular processes of the C2-C7
54
Insertion of SEMISPINALIS CAPITIS
Ventral to nuchal crest on occipital bone
55
Innervation of SEMISPINALIS CAPITIS
Dorsal branches of C2-C7 nerves
56
Action of SEMISPINALIS CAPITIS
Extension of neck. Unilateral contraction inclines head to side of contraction
57
Origin of LONGISSIMUS CAPITIS ET ATLANTIS
Transverse processes of T1 and T2 and Articular processes of C2-C7
58
Insertion of LONGISSIMUS CAPITIS ET ATLANTIS
CAPITIS part - mastoid process of temporal bone ATLANTIS part - wing of atlas
59
Innervation of LONGISSIMUS CAPITIS ET ATLANTIS
Dorsal branches of C2-C7
60
Action of LONGISSIMUS CAPITIS ET ATLANTIS
Extend head and neck. Unilateral contraction flexes the head and neck laterally or rotates atlas
61
Origin of ILIOCOSTALIS CERVICIS
First rib
62
Insertion of ILIOCOSTALIS CERVICIS
Caudal part of transverse process of C6/7
63
Innervation of ILIOCOSTALIS CERVICIS
Dorsal branches of cervical nerves
64
Action of ILIOCOSTALIS CERVICIS
Assist in neck extension.
65
Origin of ILIOCOSTALIS THORACIS ET LUMBORM
Deep layer of thoracolumbar fascia as far caudally as the 4th lumbar transverse process T-part also originates from cranial borders and lateral surfaces of last 15 ribs
66
Insertion of ILIOCOSTALIS THORACIS ET LUMBORUM
Caudal borders of ribs and transverse processes of C7
67
Innervation of ILIOCOSTALIS THORACIS ET LUMBORUM
Dorsal thoracic nerves
68
Action of ILIOCOSTALIS THORACIS ET LUMBORUM
Assists in expiration, and when contracted unilaterally, assists in lateral movement of spine
69
Origin of LONGISSIMUS CERVICIS
T2-T6 tubercles of ribs
70
Insertion of LONGISSIMUS CERVICIS
Cranial transverse processes of C4-C7 and tubercle of first rib
71
Innervation of LONGISSIMUS CERVICIS
Dorsal branches of cervical nerves
72
Action of LONGISSIMUS CERVICIS
Extend neck and stabilise vertebral column. Turns neck laterally when contracted unilaterally
73
Origin of LONGISSIMUS THORACIS ET LUMBORUM
Ilium and 1st-3rd spinous processes of sacrum, thoracic and lumbar spinous processes and supraspinous ligament
74
Insertion of LONGISSIMUS THORACIS ET LUMBORUM
Thoracic and lumbar transverse processes
75
Action of LONGISSIMUS THORACIS ET LUMBORUM
Extend (hollow) the back. Bends spine laterally when unilaterally contracted
76
Origin of SPLENIUS CAPITIS
Spinous processes of T3-T5 via thoracolumbar fascia and adjacent funicular part of the nuchal ligament
77
Insertion of SPLENIUS CAPITIS
Nuchal crest, mastoid process of temporal bone and atlas
78
Innervation of SPLENIUS CAPITIS
Dorsal branches of last 6 cervical nerves
79
Function of SPLENIUS CAPITIS
Elevate head and neck. Unilateral contraction bends head and neck towards contracted side
80
Origin of SPLENIUS CERVICIS
Spinous processes of T3-T5 via thoracolumbar fascia and nuchal ligament
81
Insertion of SPLENIUS CERVICIS
Transverse processes of C3-C5
82
Innervation of SPLENIUS CERVICIS
Dorsal branches of last 6 cervical nerves
83
Action of SPLENIUS CERVICIS
Elevate neck, unilateral contraction bends neck laterally
84
Origin of RETRACTOR COSTAE
Transverse processes of L1-L3 via thoracolumbar fascia
85
Insertion of RETRACTOR COSTAE
Caudal border of last rib
86
Innervation of RETRACTOR COSTAE
Lumbar nerves
87
Action of RETRACTOR COSTAE
Retracts last rib
88
Origin of SERRATUS DORSALIS CRANIALIS
Thoracolumbar fascia and dorsoscapular ligament
89
Insertion of SERRATUS DORSALIS CRANIALIS
Lateral rib surfaces of T5/6 continuing to ribs of T11/12
90
Innervation of SERRATUS DORSALIS CRANIALIS
Thoracic nerves
91
Action of SERRATUS DORSALIS CRANIALIS
Draw ribs cranially and laterally, aiding in inspiration
92
Origin of SERRATUS DORSALIS CAUDALIS
Thoracolumbar fascia
93
Insertion of SERRATUS DORSALIS CAUDALIS
Lateral surfaces of last 7/8 ribs
94
Innervation of SERRATUS DORSALIS CAUDALIS
Thoracic nerve
95
Function of SERRATUS DORSALIS CAUDALIS
Draw ribs caudally and assist in expiration

Equine Anatomy (6 decks)

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