Head And Neck

Branchial Cleft Cyst: Background, Pathophysiology, Etiology Discuss the embryological basis of branchial cyst/cervical cyst. Answer. It is a congenital cyst (lined by ectoderm) that appears on the side of the neck along the anterior border of the sternocleidomastoid below and behind the angle of the mandible. It appears when 2nd, 3rd and 4th pharyngeal clefts fail to … [Read more...] about Branchial Cleft Cyst: Background, Pathophysiology, Etiology

Maxillary Nerve: Origin, Course, And Branches Describe the maxillary nerve under the following headings: Origin, Course and Branches. Answer. Maxillary Nerve  Origin and Course The maxillary nerve arises from the trigeminal ganglion in the middle cranial fossa. It passes forward and traverses the foramen rotundum to reach the upper part of the … [Read more...] about Maxillary Nerve: Origin, Course, And Branches

The External Carotid Artery: Anatomy, Branches, And Functions Describe the external carotid artery in brief. Answer. Eternal Carotid Artery Origin and extent It is one of the two terminal branches of the common carotid artery. It extends from the level of the upper border of the thyroid cartilage to the back of the neck of the mandible, where it terminates by … [Read more...] about The External Carotid Artery: Anatomy, Branches, And Functions

Occipitofrontalis Muscle Give the origin, insertion, nerve supply and actions of the occipitofrontalis muscle. Answer. The occipitofrontalis muscle along with epicranial aponeurosis forms the third layer of the scalp. This muscle consists of four bellies: two occipital bellies and two frontal bellies. Occipitofrontalis Muscle Origin Occipitofrontalis Muscle … [Read more...] about Occipitofrontalis Muscle

Superficial Temporal Artery Write a short note on the superficial temporal artery. Answer. It is the smaller terminal branch of the external carotid artery. It begins in the parotid gland behind the neck of the mandible. It runs vertically upwards across the root of the zygoma in front tragus. About 5 cm above the zygoma, the artery divides into terminal anterior and … [Read more...] about Superficial Temporal Artery