Temporal, Infratemporal and Pterygopalantine Fossae Flashcards by Matthew Archer

What are the borders of the Temporal Fossa?

Medial and Floor:
- Bones Forming pterion:
  - Frontal
  - Temporal
  - Greater Wing of Sphenoid
Lateral
- Zygomatic Arch
Posterior and Superior
- Temporal Lines
Anterior
- Zygomatic Bone
- Frontal Bone
Inferior
- Infratemporal Crest
Roof
- Temporal fascia

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What are the contents of the Temporal Fossa?

Upper part of Temporalis Muscle

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Where does the Infratemporal Fossa lie in relation to the Temporal Fossa?

Inferior

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What are the borders of the Infratemporal Fossa?

Lateral
- Ramus of mandible
Medial
- Lateral Pterygoid Plate
Anterior
- Posterior aspect of Maxilla
Superior
- Inferior surface of greater wind of sphenoid
Inferior
- Attachment of Medial Pterygoid on the Interal surface angle of Mandible

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Where is the Temperomandibular Joint located?

Collectively included in temporal and infratemporal fossae

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What are the contents of the Infratemporal Fossa

Maxillary Artery
Lower part of Temporalis Muscle
Ptyerygoid Venous Plexus
Chorda Tympani Nerve (From Facial-CN VII)
Otic Ganglion
Lateral and Medial Pterygoid Muscles
Mandibular Nerve:
- Buccal Nerve
- Lingual Nerve
- Inferior Alveolar Nerve

Making Love Passionately Can Obviously Lower Misery . BIL.

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What are the Branches of the Maxillary Artery

First Branch

D
- Deep Auricular
A
- Anterior Tympanic
M
- Middle Meningeal
I
- Inferior Alveolar
A
- Acceessory Meningeal

Second Part

M
- Massenteric
Piss
- Pterygoid
Drunk
- Deep Temporal (Anterior and Posterior)
But
- Buccinator

Third Part

Stupid
- Sphenopalatine
Drunk
- Descending Palatine
I
- Infraorbital
Prefer,
- Posterior Superior Alveolar
Please
- Pharyngeal
Assist
- Artery of Pterygoid Canal

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What is the Mandibular Division of the Trigeminal Nerve divided into?

Anterior and Posterior Trunks

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What comes off the Anterior Trunk of the Mandibular Nerve?

Buccal Nerve
Muscular Branches
- Deep Temporal Nerves
- Massenteric Nerve
- Lateral Pterygoid Nerve

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What does the Buccal Nerve Supply?

Skin of Cheek

Buccal mucous membranes

Buccal Gingival of Mandibular Posterior Teeth

Does not supply Buccinator Muscle. It is supplied by the Buccal Branches of the Facial Nerve.

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What branches are there of the Deep Temporal Nerve?

Anterior and Posterior Branch

Comes from the Muscular Branch of the Anterior Trunk of the Mandibular Branch of the Trigeminal Nerve.

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What do the Deep Temporal Nerves supply?

Temporal Muscle

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What does the Masseteric Nerve supply?

Masseter Muscle

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What does the Lateral Pterygoid Nerve supply?

Lateral Pterygoid Muscle

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What is the course of the Buccal Nerve

Runs between 2 heads of the Lateral Pterygoid Muscle

Located on the surface of the Buccinator Muscle

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What is the course of the Lateral Pterygoid Nerve?

Runs between 2 heads of Lateral Pterygoid Muscle

On the deep surface of the Lateral Pterygoid Muscle

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What comes off the Posterior Trunk of the Mandibular Division of the Trigeminal Nerve?

Auriculotemporal Nerve
Lingual Nerve
Inferior Alveolar Nerve
- Mental Nerve
- Incisive Nerve
- Mylohyoid Nerve

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Why is the Pterygopalatine Fossa called the Major Distribution Centre? What does it contain?

Called Major Distribution Centre because it contains:

Pterygopalatine part of the Maxillary Artery
Sensory Innervation
- Maxillary Nerve
Sympathetic Innervation
- Deep Petrosal Nerve
Parasympathetic Innervation
- Greater Petrosal Nerve

From where does the Deep Petrosal Nerve arise?

from the Internal Carotid Periarterial Plexus

From where does the Greater Petrosal Nerve arise? What does it supply?

Arises from the Facial Nerve (CN VII)

Supplies:

Laccrimal Gland
Mucosal Glands of the:
- Nose
- Palate
- Pharynx

What is the position of the Pterygopalatine Fossa

Medial (deep) to Infratemporal Fossa
Inferior to Apex of Orbit
Lateral to the back of the Nose

What is the major content of the Pterygopalatine Fossa?

Maxillary Nerve

Pterygopalatine Branch of Maxillary Artery

What are the boundaries of the Pterygopalatine Fossa

Posterior
- Pterygoid Process of Sphenoid Bone
Anterior
- Superomedial surface of Posterior Maxilla
Medial
- Perpendicular Plate of Palatine Bone
Lateral
- Pterygomaxillary Fissure
Roof
- Medial continuation of the infratemporal crest of the greater wing of Sphenoid
Floor
- Pyramidal Process of Palatine Bone

What are the “holes” and “canals” that exit the Pterygopalatine Fossa?

What passes through the Inferior Orbital Fissure?

Orbital Nerve Zygomatic Nerve Continuation of Maxillary Nerve as Infraorbital Nerve

What passes through the **Sphenopalatine Foramen**?

Nasal Lateral Nerves ## Footnote **Enters the Nasal Cavity**

What passes through the **Pterygomaxillary Fissure**?

Posterior Superior Alveolar Nerve ## Footnote **Enters Infratemporal Fossa**

What passes through the **Palatine Canal**?

Greater Palatine Nerve Lesser Palatine Nerve **Enters Roof of Oral Cavity**

What passes through te **Palatovaginal Canal**?

Pharyngeal Nerve ## Footnote **Enters the Nasopharynx**

What passes through the **Pterygoid Canal**?

Artery of the Pterygoid Canal Nerve of the Pterygoid Canal **Enters the Middle Cranial Fossa**

What passes through the **Foramen Rotundum**?

Maxillary Nerve ## Footnote **Enters the Middle Cranial Fossa**

What are the branches of the **Maxillary Division of the Trigeminal Nerve**?

* Zygomatic Nerve * _Zygomaticofacial Nerve_ * _Zygomaticotemporal Nerve_ * Infraorbital Nerve and Orbital Branch * Anterior Superior Alveolar Nerve * Middle Superior Alveolar Nerve * Posterior Superior Alveolar Nerve * Greater (anterior) Palatine Nerve * Lesser (posterior) Palatine Nerve * Nasopalatine Nerve * Lateral Nasal Branches ## Footnote **Zebracrossings in a manmade precinct generate less necrosis later**

What does the Zygomatic Nerve divide into?

Zygomaticotemporal Nerne Zygomaticofacial Nerve

What supplies the **Lower eyelid**?

Infraorbital Nerve and Orbital Branch

What does the **Anterior Superior Alveolar Nerve** supply?

Maxillary Incisors Canines

What does the **Middle Superior Alveolar Nerve** supply?

Maxilary Premolars Maxillary Molars

What does the **Posterior Superior Alveolar Nerve** supply?

Maxillary Molars Maxillary Sinus

What does the **Greater (anterior) Palatine Nerve** supply?

Hard Palate

What does the **Lesser (posterior) Palatine Nerve** supply?

Soft Palate Palatine Tonsils

What does the **Nasopalatine Nerve** supply?

Anterior Part of Hard Palate Nasal Septum

What do the **Lateral Nasal Branches** supply?

* Mostly: * Lateral wall of Nasal Cavity * Some of: * Medial wall of Nasal Cavity * Roof of Nasal Cavity

What are the divisions of the Maxillary Artery

First Part: Mandibular Part Second Part: Pterygoid Part Third Part: Pterygopalatine Part

What are the Nasal Apertures?

Anterior Nasal Aperture: Piriform Posterior Nasal Aperture: Choana