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The cervical plexus is a nerve plexus of the anterior rami of the first ... Anatomy figure: 25:03-02 at Human Anatomy Online, SUNY Downstate Medical Center ...
Injury to Erb's point is commonly sustained at birth or from a fall onto the shoulder.The nerve roots normally involved are C5 and partly C6. Symptoms include paralysis of the biceps, brachialis, and coracobrachialis (through the musculocutaneous nerve); the brachioradialis (through the radial nerve); and the deltoid (through the axillary nerve).
The carotid sheath is a condensation of the deep cervical fascia [1]: 578 enveloping multiple vital neurovascular structures of the neck, [2] including the common and internal carotid arteries, the internal jugular vein, the vagus nerve (CN X), and ansa cervicalis. [1]: 578 [2] The carotid sheath helps protects the structures contained therein. [2]
Cervical plexus. The cervical plexus is formed by the ventral rami of the upper four cervical nerves and the upper part of fifth cervical ventral ramus. The network of rami is located deep to the sternocleidomastoid within the neck. The cervical plexus innervates muscles of the neck and areas of skin on the head, neck and chest.
The cervical spine section contains seven vertebrae, C-1 through C-7, and eight nerve pairs, C-1 through C-8. There is the formation of an extensive network of nerve groups or tracts attaching to the spinal cord in arrangements called rami or plexus .
It arises from the (lateral branch of the ventral ramus [3] [4]) of cervical spinal nerve C2; [3] [4] [2] it (sources differ) receives [1] or may also receive fibres from cervical spinal nerve C3. [3] [4] It originates between the atlas, and axis. [4] The lesser occipital nerve is one of the four cutaneous branches of the cervical plexus. [5]
The omohyoid is innervated by the ansa cervicalis of the cervical plexus. [2] The inferior belly is innervated by the ansa cervicalis itself (which is derived from cervical spinal nerves C1-C3), and the superior belly is innervated by the superior root of ansa cervicalis (which is derived from the first cervical spinal nerve (C1)). [1]
This article incorporates text in the public domain from page 563 of the 20th edition of Gray's Anatomy (1918) ^ Casale, Jarett; Geiger, Zachary (2022), "Anatomy, Head and Neck, Posterior Neck Triangle" , StatPearls , Treasure Island (FL): StatPearls Publishing, PMID 30725974 , retrieved 2023-01-19