Download Suboccipital Region Muscle Picture Origin Insertion Innervation

Suboccipital Region
Muscle
Picture
Obliques Capitis
Inferior
Obliques capitis
Superior
Origin
SP of C2
Insertion
TP of C
Innervation
Suboccipital
nerve (C1)
Blood Supply
Vertebral
artery,
Occipital Artery
Action
Lateral
depression of
the atlas
TP of C1
Superior and
inferior nuchal
lines of the
occipital bone
Suboccipital
nerve
Vertebral and
occipital
arteries
Lateral
rotation and
Extension of
the head
Rectus capitis
posterior major
SP of C2
Lateral ½ of
inferior nuchal
line
Suboccipital
nerve (C1)
Vertebral and
Occipital
arteries
Extension of
the head
Rectus capitis
posterior minor
Posterior arch
of C1
Lateral ½ of
inferior nuchal
line
Suboccipital
nerve
Vertebral and
occipital artery
Extension of
the head
Superficial Layer of the back: extrinsic muscles
Muscle
Picture
Trapezius
Section 1214
Latissimus Dorsi
Section 1478
Origin
Superior nucal
line and
occipital
protuberance,
Ligamentum
nuchae, and
c1-c3 SP, SP
T1-T12
Insertion
Clavicle,
acromion,
Spine of the
Scapula
Innervation
Spinal
accessory
nerve (CN IX),
Cervical nerves
C3, C4
SP of T7-T12,
toracolumbar
fascia, iliac
crest, ribs 9-12
Floor of
Thoracodorsal
bicipital groove Nerve (C6, C7,
of the humerus C8)
Blood Supply
Transverse
cervical artery,
Descending
scapular artery,
posterior
intercostals
artery
Action
Elevates,
retracts, and
rotates scapula
Thoracodorsal
artery,l
decending
scapular artery,
trans. Cervical
artery
Adducts,
extends
shoulder;
internally
rotates arm
Levator
Scapulae
TP of C1-C4
Vertebral
border of the
scapula
Dorsal scapular
nerve
Trans. Cervical
artery,
descending
(dorsal)
scapular artery,
Posterior
intercostals
artery
Elevates and
downwardly
rotates scapula
Nuchal
ligament, SP of
C7-T1
Vertebral
border of the
scapula
Dorsal scapular
nerve
Transverse
cervical artery
descending
scapular artery
Retracts
scapula
Section 1271
Rhomboid
minor
Section 1269
Rhomboid
major
CP of t2-T5
Vertebral
border of the
scapula
Dorsal scapular
nerve
Transverse
cervical artery,
descending
scapular artery,
post.
Intercostals
artery
Retracts the
scapula
Serratus
Anterior
External
surface of
upper 8 ribs
Vertebral
border of
scapula
Long thoracic
nerve
Lateral thoracic
artery of
axillary artery
Lifts the
anterior rib
cage, protracts
the scapula
Section 1305
Superficial Deep Layer
Muscle
Picture
Splenius capitus
Splenius
cervicus
Origin
Lower
ligamentum
nuchae and
SP C7-T3
Insertion
Lateral
superior
nuchal line
Innvervation
Lower cervical
spinal nerves
Arterial supply
Dorsal branch
of posterior
intercostals
artery
Action
Extension of
the head
SP T3-T6
Posterior
tubercles of TP
C1-C3
Lover cervical
and upper
thoracic spinal
nerces
Dorsal branch
of posterior
intercostals
artery
Rotates the
spine
ipsilaterally
Intermediate layer
Muscle
Picture
Serratus
posterior
superior
Serratus
posterior
inferior
Section 1588
Origin
Ligamentum
nuchae, SP
C7-T3,
Insertion
Ribs 2-5
beyond rib
angle
Thoracodorsal Ribs 9-12
fascia
Innervations
T1-T4 spinal
nerves
Blood supply
Posterior
intercostals
artery
Action
Raises the
upper ribs
T9-12 Spinal
nerves
Posterior
intercostals
artery
Depresses the
lower four ribs
Intermediate Deep Layer
Muscle
Picture
Origin
Insertion
Innervation
Blood Supply
Action
Erector Spinae Group- Common origin: Posterior sacrum, iliac crest, sacrotuverous ligament, dorsal sacroiliac ligament, Spinus process of T 11-L5, and supraspinous
ligament
Iliocostalis
Common
Lumborum:
Posterior rami Posterior
Extend and
origin, Ilium,
angles of lower of spinal
branch of
laterally bend
sacrum,
6-12 ribs
nerves
internal
vertebral
lumbar vert.
Thoracis:
thoracic artery
column
dorsal SI
angles of ribs
ligament
1-6
Cervicis: TP of
C4-C6
Longissimus
Thoracis: CO,
TP of L1-L5
Cericis: TP of
T1-T5
Spinalis
Thoracis: SP
of T11-L2
Cervicis:
Inferior part
of nuchael lig.
Capitis: TP of
C7-T6
Thoracis: TP of
T1-T12 and
angles of lower
9 ribs
Cervicis: TP of
C2-C6
Capitis: TP of
several levels
above and
mastoid
process
Thor: Posterior
Rami of spinal
nerves
Thoracis: SP of
T1-T4
Cervicis: SP T1T4
Capitis:
Occiput
between sup.
And inf. Nuchal
lines
Posterior
rami of spinal
nerves
Cervicis: Post.
Rami of spinal
nerves C3-C4
Cervicis:
extend and
laterally bend
vertebral
column
Capitis: extend
head
Capitis: post
rami of C3-C4
Thoracis:
extend
vertebral
column
Cervicis:
extend head
Capitis: extend
head
Deep Deep Layer
Muscle
Picture
Transversospinal Group
Semispinalis
Origin
Insertion
Innervation
Blood Supply
Action
TP of T4-T12
Toracis, cervics
and capitis
ribers run
superomedially
to occiput
bone and SP in
thoracic and
cervical
regions
spanning 4-6
segments
Fivers pass
superomedially
to SP of
vertebrae
above
spanning 2-4
segments
Posterior rami
of cervical
spinal nerves
Dorsal branch
of posterior
intercostals
artery
Extend head,
cervical, and
thoracic
regions of
vertebral
column and
rotates them
contralaterally
Post. Rami of
spinal nerves
Dorsal branch
of posterior
intercostals
Stabilizes the
vertebral
column
pass
Post. Rami of
superomedially spinal nerves
to attach to
junction of
lamina and SP
of vertebrae
above their
origin,
spanning 1-2
segments
Dorsal branch
of posterior
intercostals
Extension and
rotator
movements of
the vertebral
column
Multifidus
Sacrum, ilium,
lamina, and
TP of T1-T3,
articular
processes of
C4-C7
Rotatores
TP of
vertebrae
Muscle
Picture
Origin
Insertion
Innervation
Blood supply
Action
Interspinalis
Base of
spinous
process
Base of
spinous
process of
higher
vertebrae
Post rami of
spinal nerves
Thoracic branch
of intercostals
artery, lumbar
artery
Adis in stability
of spinal
flexion and
extension
Intertransversii
TP’s
TP of higher
vertebrae
Post rami of
spinal nerves
Thoracic branch
of intercostals
arteries, lumbar
artery
Assist in lateral
flexion of the
spine