neurovasculature and lymphatic drainage of head and neck

NEUROVASCULATURE AND LYMPHATIC DRAINAGE OF HEAD AND NECK

Dr. Tanya Raza SiddiquiM. Phil Canidate- Anatomy

ZMU

OBJECTIVES

• Common carotid artery.• External and Internal carotid arteries.• Circle of willis.• Cortical homunculus .• Subclavian artery with branches.• Diploic veins and Emissary veins.• Veins of the face and neck.• Lymphatic drainage of the head and neck.• Clinical application.

COMMON CAROTID ARTERY

External carotid artey

BRANCHES

FACIAL ARTERY

INTERNAL CAROTID ARTERY

BRANCHES OF INTERNAL CAROTID ARTERY

• Opthalmic artery.• Posterior communicating artery.• Anterior communicating artery.• Middle cerebral artery.

CIRCLE OF WILLIS

SUBCLAVIAN ARTERIES

VEINS OF THE HEAD AND NECK

• Diploic veins.• Emissary veins.• Facial veins.• Superficial temporal veins.• Maxillary veins.• Retromandibular veins• External jugular veins.• Internal jugular veins.

FACIAL VEINS

BRANCHES OF THE INTERNAL JUGULAR VEIN

Inferior petrosal sinus. Facial vein Pharangeal vein. Lingual vein. Superior thyroid vein. Middle thyroid vein.

Lymphatic drainage• 3 territories-preauricular lymph node (parotid):• Upper territories- greater part of forehead,

lateral ½ of eye lid, conjunctiva, lateral part of cheek and parotid area.

submandibular lymph node:• Middle territories- median part of forehead,

external nose, upper lip, lateral part of lower lip, medial ½ of eye lid, medial part of cheek, greater part of lower jaw.

sub mental lymph node:• Lower territories- central part of lower lip,

chin and the skin of the chin.

Dangerous area of face: • infections from face

mainly from upper lip & nose can go to cavernous sinus through ophthalmic vein and deep facial vein