Asked by Ravneet Nanda on May 22, 2024
Verified
Which of the following would indicate a possible lesion of the trigeminal nerve (V) ?
A) Lack of chewing reflex when an item is placed in the oral cavity
B) Lack of ability to move the head in response to a loud noise
C) Delayed visual tracking of a moving object
D) Both "lack of ability to move the head in response to a loud noise" and "delayed visual tracking of a moving object" are correct.
Trigeminal Nerve
The fifth cranial nerve, responsible for sensory data from the face and head, and motor functions such as biting and chewing.
Chewing Reflex
An involuntary movement of the jaw that occurs in response to the presence of food in the mouth, aiding in mechanical digestion.
Oral Cavity
The mouth, an opening in the body equipped with teeth, tongue, and salivary glands, serving as the beginning of the digestive tract.
- Recognize the mechanisms and anatomical features involved in processing sensory and motor information.
- Identify the distinct roles in sensory and motor capabilities of cranial nerves.
- Identify signs associated with abnormalities in sensory and motor pathways.
Verified Answer
VG
Vaishnavi GunturuMay 25, 2024
Final Answer :
A
Explanation :
The trigeminal nerve (cranial nerve V) is primarily responsible for sensation in the face and motor functions such as biting and chewing. A lack of chewing reflex when an item is placed in the oral cavity could indicate a lesion of the trigeminal nerve. The other options involve functions not related to the trigeminal nerve: moving the head in response to a loud noise involves the auditory system and neck muscles, and visual tracking involves the visual system and ocular muscles.
Learning Objectives
- Recognize the mechanisms and anatomical features involved in processing sensory and motor information.
- Identify the distinct roles in sensory and motor capabilities of cranial nerves.
- Identify signs associated with abnormalities in sensory and motor pathways.