neurovasculature and lymphatic drainage of head and neck
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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