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Questions and Answers
Which muscle is responsible for trismus?
Which muscle is responsible for trismus?
- Lateral pterygoid (correct)
- Medial pterygoid
- Mentalis
- Orbiculis
Which artery is the blood supply for the lower lip?
Which artery is the blood supply for the lower lip?
- Angular artery
- Labial artery (correct)
- Lateral nasal artery
- Greater palatine artery
Which branch of the facial nerve supplies the muscles of the lower lip?
Which branch of the facial nerve supplies the muscles of the lower lip?
- Cervical branch
- Temporal branch
- Mandibular branch
- Buccal branch (correct)
In the parotid gland, which structure serves as a landmark for the facial nerve?
In the parotid gland, which structure serves as a landmark for the facial nerve?
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Which structure connects Broca's area and Wernicke's area?
Which structure connects Broca's area and Wernicke's area?
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Study Notes
Facial Nerve and Associated Structures
- The mandibular branch of the facial nerve supplies the muscles of the lower lip.
Blood Supply of Lower Lip
- The labial artery is responsible for the blood supply of the lower lip.
Landmarks of Facial Nerve
- The tragal pointer is a landmark for the facial nerve in the parotid gland.
Muscles and Mastication
- Trismus is caused by the spasm of the medial pterygoid muscle.
- The accessory muscle of mastication is the buccinator.
Parotid Duct
- The parotid duct opens into the second maxillary molar.
Brain Structures
- The mammillary body projects via the fornix.
- Broca's area and Wernicke's area are connected by the arcuate fasciculus.
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