Flashcards
Temporal Region
Cards in this deck (18)
- 1temporal fossaa shallow depression on the side of the skull
- 2zygomatic arch(temporal process of zygomatic bone + zygomatic process of temporal bone)
- 3pterion locationthe region where the frontal, parietal, temporal, and sphenoid join together located on the side of the skull, just behind the temple.
- 4**pterion clinical significanceknown as the weakest part of the skull. The anterior division of the middle meningeal artery runs underneath the pterion. Consequently, a traumatic blow to the pterion may rupture the middle meningeal artery causing an epidural hematoma. The pterion may also be fractured indirectly by blows to the top or back of the head that place sufficient force on the skull to fracture the pterion.
- 5Auriculotemporal nerveThis nerve as it courses posteriorly to the condylar head
frequently injured in TMJ surgery, causing an ipsilateral parasthesia of the auricle and skin surrounding the ear
the main nerve that supplies the TMJ. - 6Temporal Fossa - Content**Temporalis muscle & fascia
**superficial temporal artery and vein (giant cell arteritis)?
Deep Temporal Arteries
Maxillary Artery - 7**Parotid GlandLargest of the 3 paired salivary glands.
Structures WITHIN the parotid gland (from superficial to deep; lateral to medial):
Facial nerve (gives 2 branches before entering parotid gland): muscular branch to post belly digastric and stylohyoid and posterior auricular nerve. It then gives 5 branches from the parotid gland.
Retromandibular vein (formed within gland by union of which 2 veins?)
External Carotid Artery
Parotid lymph nodes
Parotid sheath – derived from investing layer of deep cervical fascia, encloses the gland - 8Facial Nerve and Its Branchesmotor nerves?
Branches:
temporal
zygomatic
buccal
marginal mandibular
cervical - 9Two branches of external carotid artery1. superficial temporal artery
2. maxillary artery - 10Otic ganglionLocated in the infratemporal fossa and on the medial surface of the mandibular nerve.
It is functionally associated with the glossopharyngeal nerve and innervates the parotid gland for salivation - 11Parotid gland tumorsAbout 80% of salivary gland tumors occur in the parotid glands, and though most are benign, most salivary gland cancers also begin in the parotid gland.
The most common parotid gland tumor – pleomorphic adenoma; presents as painless slow-growing mass in middle-aged women; benign but can have sarcomatous transformation
Causes: blocked ducts (inability of saliva to drain); smoking; radiation exposure
Tx: surgical excision - 12epidemic parotitisMumps (epidemic parotitis):
Caused by: Paramyxovirus
Symptoms: Painful parotid inflammation, fever, headache, orchitis. Usually self-limiting but complications can include sterility, encephalitis, meningitis (before vaccine, used to be the leading cause of viral meningencephalitis in U.S.) - 13TMJsynovial joint
joint = mandibular fossa, articular disc, articular tubercle - 14Auriculotemporal nerveThis nerve as it courses posteriorly to the condylar head, is frequently injured in temporomandibular joint (TMJ) surgery, causing an ipsilateral parasthesia of the auricle and skin surrounding the ear.
- 15Muscles of Mastication1. Temporalis Muscle
2. Masseter Muscle (Deep and superficial)
3. Lateral Pterygoid muscle
4. Medial Pterygoid muscle
All innervated by the motor root of CN V3 - 16Infratemporal Fossa ContentsInferior portion of temporalis muscle
Lateral and Medical Pterygoic muscles
mandibular nerve V3 and its branches - 17injured middle meningeal arteryAn injured middle meningeal artery is the most common cause of an epidural hematoma. A head injury (from a road traffic accident or sports injury). This is particularly significant in the area of the Pterion. The anterior division of the middle meningeal artery runs underneath the pterion.
- 18Pterygopalatine fossaMajor center for distribution of branches of the maxillary nerve (CN V2) and 3rd part of maxillary artery
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- Anatomy Flashcards on Temporal Region, created by Vy Nguyen on 03/10/2017.
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- Vy Nguyen
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