ppt.infra temporal fossa

TEMPORAL & INRFRATEMPORAL FOSSA

BY:-Dr. Vivek Mishra MSMGMCH Jaipur

TEMPORAL & INFRATEMPORAL FOSSA• INTRODUCTION• BOUNDARY• CONTENTS :- 1.MUSCLES -MUSCLES OF MASTICATION i.e -TEMPORALIS,MASSETER, LATERAL & MEDIAL PTERYGOID

2.VESSELES- MAXILLARY ART.,VEIN & PTERYGOID PLEXUS OF VEINS

3.NERVES-MANDIBULAR NERVE & OTIC GANGLION

4.TEMPOROMANDIBULAR JOINT

INFRATEMPORAL FOSSA

BONY AREA FOF INFRATEMPORAL FOSSA

TEMPORALIS MUSCLE

ORIGIN & INSERTION OF TEMPORALIS MUSCLLE

TEMPORAL FASCIA & MUSCLE ,MASSETER MUSCLE

ORIGIN & INSERTION OF MASSETER MUSCLE

MUSCLES IN INFRATEMPORAL FOSSA

ORIGIN & INSERTION OF LATERAL & MEDIAL PTERYGOID MUSCLES

INSERTION OF LATERAL PTERYGOID MUSCLE

RELATION OF LATERAL PTERYGOID MUSCLE AFTER RETRACTING RAMUS OF MANDIBLE WITH TEMPORALIS MUSCLE

SOME RELATIONS OF LATERAL PTERYGOID MUSCLE

DEEP DISSECTION OF TEMPORAL & INFRATEMPORAL REGION AFTER REMOVING A PART OF RAMUS OF MANDIBLE WITH MASSETER & INSERTION OF TEMPORALIS MUSCLEZYGOMATIC ARCH HAS BEEN REMOVED

ORIGIN & COURSE OF MAXILLARY ARTERY

MAXILLARY ARTERY:-ORGIN COURSE & BRANCHES IN INFRATEMPORAL FOSSA

BRANCHES OF MAXILLARY ARTERY

A.First Part:- 1.Deep Auricular Artery 2.Anterior Tympanic 3.Middle Meningeal Artery 4.Accessory Meningeal Artery 5.Inferior Alveolar Artery

B.Second Part:- 1.Deep Temporal 2.Pterygoid 3.Masseteric 4.Buccal

C.Third Part:- 1.Posterior Superior Alveolar 2.Infraorbital 3.Greater Palatine 4.Pharyngeal 5.Artery Of Pterygoid Canal 6.Sphenopalatine Artery [Terminal part of maxillary artery]

BRANCHES OF MAXILLARY ARTERY

A.FIRST PART:-1.Deep Auricular

Artery 2.Anterior Tympanic 3.Middle Meningeal

Artery 4.Accessory

Meningeal Artery5.Inferior Alveolar

Artery

BRANCHES OF MAXILLARY ARTERY

B.SECOND PART:-1.Deep Temporal 2.Pterygoid3.Masseteric 4.Buccal

• C.Third Part:-1.Posterior Superior

Alveolar 2.Infraorbital3.Greater Palatine

4.Pharyngeal5.Artery Of Pterygoid

Canal 6.Sphenopalatine

[Terminal part of maxillary artery]

PTERYGOID PLEXUS OF VEINS1-SITUATED around the lateral Pterygoid Muscle2-Tributaries are those veins which accompany branches of maxillary artery3-Plexus is draind by maxillary vein 4-Maxillary vein is only accompany to first part of maxillary artery 5-Maxillary vein unite with superficial temporal vein to form retromandibular veinCOMMUNICATIONS:-1.With inferior orbital vein through the inferior orbital fissure2.With cavernous sinus through emissary vein passing through foramen lacerum & ovale3.With facial vein through deep facial vein

MANDIBULAR NERVE & ITS BRANCHES SEEN IN INFRA TEMPORAL FOSSA AFTER REMOVING A PART OF MANDIBLE

MANDIBULAR NERVE & ITS BRANCHES SEEN IN INFRA TEMPORAL FOSSA AFTER REMOVING A PART OF MANDIBLE

Branches of Mandibular Nerve:-1.From Main trunk:- [a] Meningeal branch [b] Nerve to Medial Pterygoid muscle2.From Anterior division of trunk :- [a] Sensory-Buccal nerve [b] Motor branches to Masseter [Nerve to masseter], Temporalis[Deep Temporal nerves], Lateral Pterygoid Msucle3.From Posterior division of trunk [a] Auriculotemporal nerve [b] Lingual nerve [c] Inferior alveolar nerve

MANDIBULAR NERVE,ITS COURSE & BRANCHES IN INFRATEMPORAL FOSSA

OTIC GANGLION:-ITS CONNECTIONS

OTIC GANGLION• Introduction:- A peripheral parasympathetic ganglion

which supply secretomotor fibres to parotid gland• Topographically :- It is connected to Mandibular nerve but

functionally to Glossopharyngeal Nerve• Size & Situation:- 2-3 mm in size & is situated in infratemporal

fossa just below the foramen Ovale between Mandibular nerve [lateral side ]& Tensor Veli Palatini muscle [medial side]

Connections & Branches:- 1. Motor or Parasympathetic Root:- By lesser petrosal nerve The pre ganglionic fibres from inf.salivatory nucleus –IX Cn.-to- tympanic branch-to-the tympanic plexus-to-the lesser petrosal nerve to- otic ganglion The Post ganglionic fibres from otic ganglion-through- auriculotemporal nerve –to- Parotd Gland [SECRETOMOTOR TO PAROTID GLAND]2. Sympathetic Root:- Nerve fibres from plexus on the middle meningeal artery [ These are post ganglionic fibres from sup.cervical sympathetic ganglion]-to otic ganglion-to auriculotemporal nerve –to parotd gland [VASOMOTOR IN FUNCTION] 3. Sensory Root:-Sensory fibres from parotid Gland Through auriculotemporal nerve

4.Other Connections to otic ganglion:- 1. A branch from nerve to medial pterygoid which passes as such through otic ganglion to supply Tensor veli palatini & tensor Tympani 2. The Chorda tympanic nerve is connected to otic ganglion. this connection provide an alternate pathway of taste from ant.2/3 of the tongue.

THANKS