Temporal and infratemporal region part 1
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Transcript of Temporal and infratemporal region part 1
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Head and Neck Temporal and Infratemporal regions
Part I
MUSCLES OF MASTICATION
Prof. Dr . Mohamed El Fiky Associate professor of anatomy and embryology
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Temporal Fascia
Temporalis Muscle
Superficial Layer
Deep Layer
Temporal Fascia
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Muscles of Mastication
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Temporalis Muscle
Inserted into: The Tip,
The Anterior Border and
Medial Surface of
Coronoid Process
1- Temporalis Origin : 1- inf. Temporal line 2-Bone of temporal fossa 3- temporal fascia
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Retraction of
The Mandible
Elevation of
The Mandible 1- Temporalis Action
Action : 1- elevation of the mandible 2- Retraction of the mandible
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Deep Temporal Nerves
Nerve Supply of Temporalis Muscle
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1- Skin
2- Superficial Fascia
3- Auricularis muscles (Anterior and Superior)
4- Temporal Fascia
Relations of Temporalis Muscle 1- Superficial Relations :
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5- Superficial temporal vessels
7- Zygomatic arch
8- Masseter muscle
6- Auriculo-temporal Nerve
Relations of Temporalis Muscle 1- Superficial Relations :
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Lateral Pterygoid muscle
Medial Pterygoid muscle
Buccinator
Temporal fossa Deep temporal vessels and nerve
Maxillary artery and Pterygoid plexus of veins
Buccal nerve and artery Temporalis
2- Deep Relations
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Lateral Pterygoid
Buccinator
Temporalis
2- Deep Relations
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Masseter
Superficial Head
Deep Head
Zygomatico-temporal Suture
Insertion of Superficial Head
Insertion of
Deep Head Protraction
Nerve to
Masseter
2- Masseter Origin, Insertion, Action and Nerve Supply
Origin : • Lower border and inner surface of zygomatic arch Insertion : • Lateral surface of ramus of mandible Action : • Elevation of the mandible • Protraction of the mandible
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Vertical Plane
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Zygomatic branch of facial nerve
Transverse facial artery
Parotid duct and
accessory parotid
Upper buccal branch of facial nerve
Lower buccal branch of facial nerve
Mandibular branch of facial nerve
Temporal branch of facial nerve
Parotid gland
Relations of Masseter : Superficial relations
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Ramus of the mandible
Masseteric nerve and vessels
The insertion of temporalis muscle
2- Deep Relations
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Buccal artery
Buccal nerve
Buccinator muscle
Buccal pad of
Fat
3- Anterior Relations
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Lateral Pterygoid
Upper Head
Lower Head
3- Lateral Pterygoid Origin : by 2 heads • Upper head from infratemporal crest of greater wing of the sphenoid • * Lower head : from lateral surface of lateral ptregoid plate Insertion : Fovea in front head of the mandible ( ptregoid fovea ) Action : Protraction of the mandible Depression of the mandible Side to side movement Nerve supply : Anterior division of the mandibular nerve
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Protraction
Depression
Push to the opposite side
3- Lateral Pterygoid : Action
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A- Muscles
1- Lower part of Temporalis
2- Superficial head of Medial Pterygoid
B- Vessels1- 2nd part of
maxillary artery
2- Pterygoid Plexus of veins
3- Deep facial vein
C- Nerves
1- Buccal nerve of Mandibular nerve
Relations of Lateral Pterygoid : Superficial relations :
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Tensor Palati MuscleLevator Palati Muscle
2- Deep Relations :Muscles
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2nd Part of Maxillary artery and it branches
Branches of 1st part of Maxillary artery 1- Deep auricular 2- Anterior Tympanic
3- Middlle meningeal4- Accessory Meningeal
5- Inferior Alveolar
2- Deep Relations :Vessels
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Mandibular Nerve and its Branches
Deep temporal nerves
Buccal nerve
Auriculotemporal nerve
Inferior alveolar nerve
Lingual nerve
Chorda Tympani nerve
2- Deep Relations :Nerves
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Sphenomandibular ligament
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Deep temporal vessels and nerve
vessels and nerve to masseter
Inferior alveolar nerve
Sphenomandibular ligament
Lingual nerve
Buccal nerve
Maxillary artery
1- At the Upper Border
2- At the Lower Border
Inferior alveolar vessels
3- Between The Two Heads
Pterygoid Plexus of Veins Surrounds
The Whole Muscle
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Deep Head Superficial Head
Nerve to Medial Pterygoid
4- Medial Pterygoid Origin : by 2 heads 1- superficial head : from maxillary tuberosity . 2- deep head from : medial surface of lateral ptregoid plate . Insertion : Medial surface of remus of the mandible Nerve supply : trunk of the mandibular nerve Action : Prtruction of the mandible Elevation of the mandible Side to side movement
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Insertion
Medial Pterygoid
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Protraction
Push to the opposite side
4- Medial Pterygoid :Action
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Vertical Plane
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3- Inferior alveolar vessel and nerve
2- Sphenomandibular ligament
4- Lingual nerve
1- Lower head of Lateral Pterygoid
5- Mandibular Foramen and
Ramus of the Mandible
6- Pterygoid Plexus of
Veins
Relations of Medial Pterygoid Superficial relations
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Submandibular gland
Facial artery
Relations of Medial Pterygoid deep relations