Internal jugular vein: Formed by the union of inferior petrosal and sigmoid dural venous sinuses in or just distal to the jugular foramen :ورید ژوگولار داخلی […]
Ansa cervicalis: Formed by the anterior rami (divisions) of cervical spinal nerves C1-C3. Made up of two roots: Superior and Inferior root :قوس گردنی تشکیل شده […]
Superior root of ansa cervicalis: It originates from C1 and branches to the superior belly of the omohyoid muscle, upper parts of the sternothyroid and upper […]
Inferior branch of ansa cervicalis(C2-C3): It originates from C2,C3 and branches to the inferior belly of the omohyoid muscle, lower parts of the sternothyroid and sternohyoid […]
External laryngeal nerve : It forms from the division of the superior laryngeal nerve and innervates the cricothyroid muscles :عصب حنجره ای خارجی عصب حنجره ای […]
Internal laryngeal nerve : It forms from the division of the superior laryngeal nerve into external and internal laryngeal branches at the level of the hyoid […]
