third cranial nerve
Definition
- Noun:
- Oculomotor nerve: The third cranial nerve is a motor nerve that controls most of the eye's movements, including the constriction of the pupil and the positioning of the eyelid.
Usage Examples
- Noun:
- Damage to the third cranial nerve can cause double vision and a drooping eyelid.
- The third cranial nerve emerges from the midbrain and innervates several extrinsic eye muscles.
Advanced Usage
- Clinical assessment: In neurological examinations, the function of the is tested by checking eye movements and pupillary response to light.
- The physician assessed the patient's third cranial nerve function by having them follow a moving light.
Variants and Related Words
- Cranial Nerve III: A synonymous anatomical term.
- Cranial Nerve III palsy is a specific medical diagnosis.
- Oculomotor nerve: The most common alternative name.
- The oculomotor nerve is responsible for elevating the upper eyelid.
Synonyms
- Oculomotor nerve: The direct synonym.
- CN III: The abbreviated form used in medical charts.
Related Phrases
- Third nerve palsy: A medical condition resulting from dysfunction of this nerve.
- Symptoms of third nerve palsy include ptosis and an inability to move the eye inward.
Noun
-
supplies extrinsic muscles of the eye
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