MAXILLARY ARTERY Internal maxillary artery Larger terminal branch
MAXILLARY ARTERY
Internal maxillary artery. Larger terminal branch of external carotid artery. Arises within substance of parotid. Has 3 parts: 1 st or mandibular part. 2 ndor pterygoid part. 3 rd or pterygopalatine part
BRANCHES 1 ST PART: Deep auricular. Anterior tympanic. Middle meningeal. Accessory meningeal. Inferior alveolar Accompany branches of mandibular nerve. Passes through the foramina.
BRANCHES 2 ND PART: Deep temporal Masseteric Pterygoid Buccal All branches are muscular. They do not pass through any foramina.
BRANCHES 3 RD PART: Posterior superior alveolar Infra-orbital Greater palatine Pharyngeal Artery of pterygoid canal Sphenopalatine
PTERYGOPALATINE FOSSA
CONNECTIONS
2 nd division of trigeminal nerve. Entirely sensory. Course
BRANCHES In middle cranial fossa. Meningeal branch. • In pterygopalatine fossa. – Ganglionic. – Zygomatic nerve. – Posterior superior alveolar (dental) ZB MB PSA
BRANCHES In infraorbital canal. Middle superior alveolar. Anterior superior alveolar. On the face. Palpebral. Nasal. Superior labial. ASA MSA
Largest peripheral ganglion of parasympathetic system. Present in pterygopalatine fossa. Topographically related to maxillary nerve, functionally with greater petrosal branch of facial nerve.
CONNECTIONS Parasympathetic or motor root: secretomotor to lacrimal, nasal, palatine & pharyngeal glands. Sympathetic root: vasomotor to mucous membrane of nose, palate & nasopharynx. Sensory root: passes without interruption
BRANCHES FOUR SETS. Orbital. Palatine. Nasal. Pharyngeal.
APPLIED ANATOMY Ganglion of hay fever
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