Overview and topographic anatomy
General information
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The entire temporal area consists of 2 fossae divided by the zygomatic arch
Temporal fossa
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Related to the temple of the head
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Communicates with the infratemporal fossa beneath the zygomatic arch
Infratemporal fossa
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An irregularly shaped fossa inferior and medial to the zygomatic arch
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Communicates with the pterygopalatine fossa at the pterygomaxillary fissure

Borders of the temporal fossa
Overview
Border | Structures |
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Superior |
|
Inferior |
|
Anterior |
|
Posterior |
|
Medial |
|
Lateral | Temporal fascia |
Muscles
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Temporalis
Arteries
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Superficial temporal
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Middle temporal
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Anterior and posterior deep temporal
Veins
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Superficial temporal
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Middle temporal
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Anterior and posterior deep temporal
Nerves
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Anterior and posterior deep temporal
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Auriculotemporal
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Temporal branches of facial
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Zygomaticotemporal

Contents of the temporal fossa
Overview
TEMPORALIS | ||||
Origin | Insertion | Main Actions | Nerve Supply | Comments |
Entire temporal fossa—along the inferior temporal line, including the temporal fascia | Coronoid process—along the apex, anterior and posterior borders, medial surface extending inferiorly on the anterior border of the mandibular ramus (temporal crest) to the 3rd molar tooth |
|
Anterior and posterior deep temporal branches from the anterior division of the mandibular division of the trigeminal n. (anterior deep temporal may branch from the buccal n., and the posterior deep temporal may branch from the masseteric n.) | The main postural muscle—maintains the mandible in rest position |

Vascular supply
ARTERIAL SUPPLY | ||
Artery | Source | Course |
Superficial temporal | A terminal branch of the external carotid a. that arises within the parotid gland |
|
Middle temporal | Anterior branch(es) off the superficial temporal a. after it passes superiorly to the root of the zygomatic arch | Passes deep into the temporalis fascia and temporalis m., where it anastomoses with the anterior and posterior deep temporal vessels |
Anterior and posterior deep temporal | Branches of the 2nd part of the maxillary a. |
|

VENOUS DRAINAGE | |
Vein | Course |
Superficial temporal |
|
Middle temporal |
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Anterior and posterior deep temporal |
|

Nerve supply
Nerve | Source | Course |
---|---|---|
Mandibular division of the trigeminal |
|
|
Anterior and posterior deep temporal | Arise from the anterior division of the mandibular division of the trigeminal n. | Pass superiorly to the lateral pterygoid m. between the skull and the temporalis m. as they pass deep to the muscle to innervate it |
Auriculotemporal | Arises from the posterior division of the mandibular division of the trigeminal n. |
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Temporal branches of the facial | Motor branches that arise in the substance of the parotid gland |
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Zygomaticotemporal | Maxillary division of the trigeminal n. |
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Borders of the infratemporal fossa
Overview
Border | Structure(s) |
---|---|
Superior |
|
Inferior | No anatomic floor—the boundary of the fossa ends where the medial pterygoid attaches to the mandible |
Lateral | Ramus of the mandible (medial surface) |
Medial |
|
Anterior | Posterior portion of the maxilla |
Posterior |
|

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