-Suboccipital nerve from dorsal ramus dorsal ramus The dorsal ramus (Latin for branch, plural rami ) is the dorsal branch of a spinal nerve that forms from the dorsal root of the nerve after it emerges from the spinal cord. ... The dorsal ramus carries information that supplies muscles and skin sensation to the human back. › wiki › Dorsal_ramus_of_spinal_nerve

Dorsal ramus of spinal nerve - Wikipedia

of C1 is the motor innervation of the suboccipital triangle. It passes through the triangle.

What forms the suboccipital triangle?

The suboccipital triangles are a paired triangular-shaped space formed by the configuration of three paired muscles in the posterior neck between the occipital bone, C1 and C2.

What is the significance of the suboccipital triangle?

The suboccipital triangle is an anatomic landmark involving the suboccipital muscles and allows for the localization of the vertebral artery and the suboccipital nerve. The posterior atlanto-occipital membrane forms the floor of the triangle.

Is suboccipital nerve sensory or motor?

A motor nerve composed of axons from the dorsal ramus of spinal nerve C1. It leaves the spinal canal between the skull and the first cervical vertebra, and it innervates the four small muscles of the suboccipital triangle, deep in the back of the neck at the base of the skull.

What are the contents of the occipital triangle?

Contents

• spinal accessory nerve.
• cutaneous and muscular branches of the cervical plexus.
• upper most part of brachial plexus.
• supraclavicular nerve.
• transverse cervical vessels.

The Suboccipital Triangle | Boundaries | Contents

41 related questions found

What type of nerve is the occipital nerve?

The greater occipital nerve is a cutaneous nerve, the thickest in the body, that innervates the skin from the upper neck, over the occiput, up to the vertex of the scalp ^1-3.

What emerges from the Suboccipital triangle?

Emerging from within the triangle is the suboccipital artery (of Salmon) that arises from the third segment of the vertebral artery that occupies a groove on the posterior arch of the atlas. This vessel is accompanied by a plexus of veins, the suboccipital venous plexus.

What does C2 nerve innervate?

C1, C2, and C3 (the first three cervical nerves) help control the head and neck, including movements forward, backward, and to the sides. The C2 dermatome handles sensation for the upper part of the head, and the C3 dermatome covers the side of the face and back of the head. (C1 does not have a dermatome.)

What is a suboccipital release?

Treatment - Suboccipital Release. This is a soft tissue technique is appropriate for reducing tension in the soft tissues of the cervical spine, in particular the upper cervical, suboccipital aspect of the spine.

What muscles does the Suboccipital nerve innervate?

The suboccipital nerve innervates the following suboccipital muscles:

• The rectus capitis posterior minor muscle.
• The rectus capitis posterior major muscle (the superomedial border of the suboccipital triangle)
• The obliquus capitis superior (the superolateral border of the suboccipital triangle)

What causes tight suboccipital muscles?

The suboccipital muscles commonly become tense and tender due to factors such as eye strain, wearing new eyeglasses, poor ergonomics at a computer workstation, grinding the teeth, slouching posture, and trauma (such as a whiplash injury).

What important anatomical structures travel through suboccipital triangle?

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

Which of the following muscles is commonly referred to as the key to the suboccipital triangle?

AREAS OF DAMAGE DURING HYPER-FLEXION

The Suboccipital Triangle – This is an area in the neck located at the base of the skull, and is made up of three key muscles: Obliquus Capitus Superior. Obliquus Capitus Inferior. Rectus Capitis Posterior.

Why is Suboccipital venous plexus important?

The suboccipital venous plexus drains deoxygenated blood from the back of the head. It communicates with the external vertebral venous plexuses. The external vertebral venous plexuses travel inferiorly from this suboccipital region to drain into the brachiocephalic vein.

Where are C1 and C2 vertebrae?

What are the C1 and C2 vertebrae? The C1 and C2 vertebrae are the highest of the spinal vertebrae and are located at the very top of the neck, connecting the head to the spine. The C1 vertebrae is named atlas and the C2 vertebrae is named axis.

What is supraclavicular nerve?

The supraclavicular nerve is a superficial sensory nerve originating from the C3 and C4 nerve roots of the superficial cervical plexus. This nerve arborizes proximal to the clavicle and provides sensation over the clavicle, anteromedial shoulder, and proximal chest [5, 8].

What is suboccipital neuralgia?

Upper cervical spine instability at C1-C2 can cause pressure on the base of the spine resulting in the contraction and spasm of the suboccipital muscle. This can cause headaches, migraines, and occipital neuralgia.

Where is the 3rd occipital nerve located?

The third occipital nerve (TON) is a branch of the posterior root of C3, which provides cutaneous sensation to a small portion of the occipital scalp and innervates the C2/3 facet joints.

Does the suboccipital nerve contain sensory fibers?

The suboccipital nerve innervates the rectus capitis posterior major and minor, obliquus capitis superior, obliquus capitis inferior, and semispinalis capitis. A spinal nerve's dorsal root and dorsal ganglion carry sensory fibers to the spinal cord.

Is the greater occipital nerve in the Suboccipital triangle?

The suboccipital nerve supplies the muscles of the suboccipital triangle and the semispinalis capitis. ... The C2 dorsal ramus gives a large medial branch (the greater occipital nerve) and a small lateral branch. The greater occipital nerve supplies the skin of the back of the scalp as far as the vertex of the skull.

Which of the following does the greater occipital nerve pass through?

The greater occipital nerve pierces the fascia just below the superior nuchal ridge along with the occipital artery. It supplies the medial portion of the posterior scalp as far anterior as the vertex (Fig. 133-1).

What is the third occipital nerve?

The third occipital nerve is the superficial medial branch of C3 dorsal ramus. It supplies the C2–C3 zygapophysial joint while crossing the joint laterally. Also, it supplies part of the semispinalis capitis muscle and its cutaneous branch supplies a small area of skin below the occiput.