What is the blood supply to the suboccipital muscles?

What is the blood supply to the suboccipital muscles?

the vertebral artery
All of the suboccipital muscles are supplied by the vertebral artery as well as by the deep descending branches of the occipital artery.

What nerve Innervates the suboccipital muscles?

Cervical Spinal Nerves The dorsal ramus (suboccipital nerve) runs between the posterior arch of the atlas and the vertebral artery, providing motor innervation to the suboccipital muscles. The C2 spinal nerve branches into a dorsal and ventral ramus, posterior to the lateral atlantoaxial joint.

What is the blood supply of rectus capitis posterior major?

vertebral artery
Just like the other suboccipital muscles, rectus capitis posterior major receives its blood supply from the vertebral artery and deep descending branches of the occipital artery. The vertebral vein is responsible for its venous drainage through the posterior external vertebral venous plexus.

What is the primary function of the suboccipital muscles?

The suboccipital muscles are a group of four paired deep muscles located at the base of the occipital bone. Their main actions are to extend and rotate the head. They consist of the rectus capitis posterior major, rectus capitis posterior minor, obliquus capitis superior and obliquus capitis inferior.

What Innervates the rectus capitis posterior minor?

Rectus capitis posterior minor is innervated by the suboccipital nerve, also called the posterior ramus of the first (C1) spinal nerve. The suboccipital nerve reaches rectus capitis posterior minor by traveling between the cranium and the atlas.

Is suboccipital nerve sensory or motor?

motor fibers
The suboccipital nerve carries mainly motor fibers. The prime function of this nerve is to provide motor innervation for the suboccipital muscle group.

What does C1 nerve innervate?

The cervical spinal nerve 1 (C1) is a spinal nerve of the cervical segment. C1 carries predominantly motor fibres, but also a small meningeal branch that supplies sensation to parts of the dura around the foramen magnum (via dorsal rami)….Cervical spinal nerve 1.

What passes through the suboccipital triangle?

The suboccipital triangle contains the vertebral artery, suboccipital nerve (C1), and suboccipital venous plexus.

Which nerve passes through the suboccipital triangle?

How are the suboccipital muscles innervated?

All of the suboccipital muscles are supplied by the vertebral artery as well as by the deep descending branches of the occipital artery. The four pairs of muscles are all innervated by the dorsal ramus of the first cervical nerve, the suboccipital nerve. As mentioned above, the main action of the suboccipital muscles is to maintain posture.

Where does the suboccipital nerve supply blood to the brain?

They are innervated by the suboccipital nerve and their arterial supply comes from the vertebral artery and deep descending branches of the occipital artery. Richard L. Drake, A. Wayne Vogyl, Adam W. M. Mitchell.

Does the suboccipital muscle ascends dorsally?

It ascends dorsally, whilst expanding in width, to insert between the superior and inferior nuchal lines, on the occipital bone, laterally to semispinalis capitis. All of the suboccipital muscles are supplied by the vertebral artery as well as by the deep descending branches of the occipital artery.

What is the suboccipital region?

The suboccipital region is a muscle compartment, located inferior to the external occipital protuberance and the inferior nuchal line.