Lingual and Inferior Alveolar Nerve Anatomy

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Questions and Answers

What is the largest cranial nerve?

CN V - Trigeminal Nerve

Which of the following branches of the trigeminal nerve is responsible for motor function in the muscles of mastication?

Mandibular V3 (correct)

Maxillary V2

Opthalmic V1

The mandibular branch of the trigeminal nerve leaves the skull at the foramen ovale.

True

Which of the following is NOT a sensory function of the mandibular branch of the trigeminal nerve?

Mucosa of anterior 2/3 tongue Signup and view all the answers

What are the two branches the trigeminal nerve trunk splits into after it leaves the skull?

A smaller trunk and a larger trunk Signup and view all the answers

What is the action of the mylohyoid muscle?

Depresses the mandible (in a fixed hyoid) or elevates the hyoid in swallowing Signup and view all the answers

The inferior alveolar nerve supplies the incisors and canines.

True Signup and view all the answers

What is the clinical significance of the inferior alveolar block?

It blocks the mandibular foramen - mandibular canal. Signup and view all the answers

What is the clinical significance of the mental nerve block?

It blocks the mental foramen - lower anteriors. Signup and view all the answers

What nerve is responsible for the sensory function of the 2/3 of the anterior dorsum of the tongue?

The Lingual Nerve Signup and view all the answers

What nerve runs anteriorly in the incisive canal and is responsible for the sensation to the pulps of the anterior teeth?

Incisive nerve Signup and view all the answers

The inferior alveolar nerve enters the mandibular foramen.

True Signup and view all the answers

What nerve descends deep to the lateral pterygoid muscle?

Inferior Alveolar (dental) nerve Signup and view all the answers

What nerve travels in the inferior dental or mandibular canal in the mandible?

Inferior alveolar (dental) nerve Signup and view all the answers

What nerve emerges at the mental foramen?

Mental nerve Signup and view all the answers

What is the action of the Tensor Tympani muscle?

Tenses the eardrum Signup and view all the answers

True or False: The lingual nerve unites with the Chorda Tympani branch of the facial nerve and receives parasympathetic fibers for the submandibular gland?

True Signup and view all the answers

Where does the lingual nerve emerge from?

Under the lateral pterygoid muscle Signup and view all the answers

What does the lingual nerve do?

It curves downwards & forwards between the ramus of the mandible and the medial pterygoid muscle Signup and view all the answers

What does the lingual nerve supply?

The mucous covering of the anterior 2/3 dorsum of the tongue, the under surface of the tongue, and the floor of the mouth Signup and view all the answers

What does the lingual nerve twist around?

The submandibular duct Signup and view all the answers

Study Notes

Lingual Nerve

Second branch of posterior trunk
Sensory
Travels with chorda tympani branch of facial nerve & receives parasympathetic fibers for submandibular glands
Emerges from under lateral pterygoid muscle & curves downwards
Lies anterior to medial pterygoid muscle, the pterygo-mandibular space
Then passes towards floor of the mouth
Twists around submandibular duct
Enters tongue behind sublingual gland
Supplies:
Mucosa covering anterior 2/3 dorsum of tongue
Under surface of tongue
Floor of mouth

Inferior Alveolar (Dental) Nerve

Sensory & Motor
Descends deep to lateral pterygoid muscle behind lingual nerve
Enters mandibular foramen
Travels in mandibular canal or mandibular canal in mandible
Divides near premolars into mental nerve & incisive nerve
Mental nerve emerges at mental foramen & runs anteriorly in incisive canal - Sensation to pulps of anterior teeth

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Description

Explore the anatomy of the lingual and inferior alveolar nerves in this informative quiz. Learn about their sensory and motor functions, pathways, and areas of innervation. Perfect for students of dental anatomy or anyone interested in neuroanatomy.