Hypoglossal (XII) Nerve

Hypoglossal Nerve

Q. 1 muscle supplied by the hypoglossal nerve are all except:
 A palatolossus
 B styloglossus
 C Hyoglossis
 D genioglossus
Q. 1 muscle supplied by the hypoglossal nerve are all except:
 A palatolossus
 B styloglossus
 C Hyoglossis
 D genioglossus
Ans. A

Explanation:

palatoglossus.

1. All the muscles of the tongue except palatoglossus (cranial accessory nerve through pharyngeal plexus) are supplied by hypoglossal nerve

2. all the muscles of pharynx except stylopharangeus (glossopharengeal nerve) are supplied by pharyngeal plexus.

3. all muscles of soft palate except tensor velli palatine (nerve to medial pterygoid from mandiubular nerve) are supplied by pharyngeal plexus.

4. All muscles of larynx except cricothyroid (external laryngeal nerve) are supplied by recurrent laryngeal nerve


Q. 2

The sensory supply of the palate is through all of the following, EXCEPT?

 A

Facial nerve

 B

Hypoglossal nerve

 C

Glossopharyngeal nerve

 D

Maxillary division of trigeminal nerve

Q. 2

The sensory supply of the palate is through all of the following, EXCEPT?

 A

Facial nerve

 B

Hypoglossal nerve

 C

Glossopharyngeal nerve

 D

Maxillary division of trigeminal nerve

Ans. B

Explanation:

The muscles of the soft palate are the tensor veli palatini, the levator veli palatini, the palatoglossus, the palatopharyngeus, and the musculus uvulae.

  • The greater and lesser palatine nerves from the maxillary division of the trigeminal nerve enter the palate through the greater and lesser palatine foramina.
  • The nasopalatine nerve a branch of the maxillary nerve, enters the front of the hard palate through the incisive foramen.
  • The glossopharyngeal nerve also supplies the soft palate.
  • Facial nerve supplies submandibular and sublingual salivary parasympathetic glands, lacrimal gland, and glands of nose and palate.

Q. 3

Motor supply to the muscles of the tongue is by:

 A

Hypoglossal nerve

 B

Facial nerve

 C

Lingual nerve

 D

Glossopharyngeal nerve

Q. 3

Motor supply to the muscles of the tongue is by:

 A

Hypoglossal nerve

 B

Facial nerve

 C

Lingual nerve

 D

Glossopharyngeal nerve

Ans. A

Explanation:

All the intrinsic and the extrinsic muscles, except the palatoglossus are supplied by the hypoglossal nerve. The palatoglossus is supplied by the cranial root of the accessory nerve through the pharyngeal plexus Lingual nerve is the nerve of general sensation and the chorda tympani is the nerve of taste for the anterior two thirds of the tongue except vallate papillae


Q. 4

Hypoglossal nerve is:            

September 2005

 A

6th nerve

 B

7th nerve

 C

12th nerve

 D

9th nerve

Q. 4

Hypoglossal nerve is:            

September 2005

 A

6th nerve

 B

7th nerve

 C

12th nerve

 D

9th nerve

Ans. C

Explanation:

12th nerve

Quiz In Between



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