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The C-terminus (also known as the carboxyl-terminus, carboxy-terminus, C-terminal tail, carboxy tail, C-terminal end, or COOH-terminus) is the end of an amino acid chain (protein or polypeptide), terminated by a free carboxyl group (-COOH). When the protein is translated from messenger RNA, it is created from N-terminus to C-terminus. The ...
Transverse cervical nerve - innervates anterior region of neck (C2 and C3) Supraclavicular nerves - innervate the skin above and below the clavicle (C3-C4) [6] [clarification needed] Muscular Ansa cervicalis - a loop formed by C1-C3 that supplies most infrahyoid (a.k.a. "strap") muscles (sternothyroid, sternohyoid, omohyoid muscles) etc.
Superficial to the carotid sheath lies the hypoglossal nerve, and ansa cervicalis of the cervical plexus.. The hypoglossal nerve crosses both the internal and external carotids, curving around the origin of the occipital artery.
The head and neck are emptied of blood by the subclavian vein and jugular vein. Right side of neck dissection showing the brachiocephalic, right common carotid artery and its branches. The brachiocephalic artery or trunk is the first and largest artery that branches to form the right common carotid artery and the right subclavian artery.
It curves around the posterior border of the sternocleidomastoideus muscle [1] about its middle, and, passing obliquely forward beneath the external jugular vein to the anterior border of the muscle, [citation needed] it perforates the deep cervical fascia before dividing into an ascending branch and a descending branch [1] beneath the platysma.
Superiorly, the retropharyngeal space terminates at the base of the skull (more specifically, at the clivus [2]). [1] [5] Inferiorly, the true RPS terminates at a variable level along the upper thoracic spine with the fusion of alar fascia and visceral fascia; [1] sources either give the inferior termination of the true RPS as occurring at approximately the vertebral level of T4 [2] or at a ...
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]
The triangles of the neck describe the divisions created by the major muscles in the region.. The side of the neck presents a somewhat quadrilateral outline, limited, above, by the lower border of the body of the mandible, and an imaginary line extending from the angle of the mandible to the mastoid process; below, by the upper border of the clavicle; in front, by the middle line of the neck ...