39. Suboccipital Region Flashcards
Origin of splenius capitis?
Ligamentum nuchae
C7-T3 spinous processess
Insertion of splenius capitis?
Occiptial bone
Mastoid
Origin of splenius cervicis?
T3-T6 spinous processes
Insertion of splenius cervicis?
C1-C2 transverse processes
Innervation of splenius capitis and cervicis?
Posterior rami C1-C6
Action of splenius capitis and cervicis?
Bilateral - extend neck and head
Unilateral - flexes and rotates to the same side
Origin of semispinalis capitis?
C4-T7 transverse processes
Insertion of semispinalis capitis?
Occipital bone
Action of semispinalis capitis?
Both - extend cervical spine
One - bend to same side and rotate to opposite side
Origin of longissimus capitis?
T1-T3 and C4-C7 transverse processes
Insertion of longissimus capitis?
Mastoid processes
Action of longissimus capitis?
Both - extends head
One - flexes and rotates head to same side
Innervation of longissimus capitis?
Posterior rami
What are the suboccipital muscles? (4)
Rectus capitis posterior minor
Rectus capitis posterior major
Obliquus capitis superior
Obliquus capitis inferior
Attachments of rectus capitis posterior minor?
C1 posterior tubercle to inferior nuchal line
Attachments of rectus capitis posterior major?
C2 spinous processes to inferior nuchal line
Action of rectus capitis major and minor?
Both - extend head
One - rotate to same side
Innervation of rectus capitis major and minor?
Suboccipital nerve (posterior rami of C1)
Attachments of obliquus capitis superior?
C1 transverse processes to occipital bone
Attachments of obliquus capitis inferior?
C2 Spinous processes to C1 transverse processes
Innveration of obliquus capitis sup and inf?
Suboccipital nerve (post rami C1)
Nerve supply of suboccipital region? (3)
Suboccipital (C1) Greater occipital (C2) Least occipital (C3)
From which artery does the occipital artery branch?
ECA
From which artery does the vertebral artery branch?
Subclavian
Via which foramen do the vertebral arteries ascend neck?
Foramen transversarium of cervical vertebrae then foramen magnum
What do the R and L vertebral arteries unite to form?
Basilar artery
With which nerve do the occipital veins run?
Suboccipital nerve
What do the occipital veins join to form?
Deep cervical viein
Until which vertebral level do the vertebral veins run?
C6 (here they leave foramen transversarium to join bracheocephalic vein)
LEARN THE LIGAMENTS OF THE NECK
Slide 17
What type of joint are the facet joints?
Plane synovial
What type of joint are between the vertebral bodies?
Secondary cartilagenous
