Question:
Muscle responsible for ptosis in Horner syndrome:
Muscle responsible for ptosis in Horner syndrome:
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Muller's muscle is the primary muscle responsible for ptosis in Horner syndrome, as it is part of the sympathetic nervous system's influence on the eyelid.
Updated On: Mar 24, 2025
- Orbicularis oculi
- Levator palpebrae
- Horner muscle
- Muller's muscle
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The Correct Option is D
Solution and Explanation
Horner syndrome results from disruption of sympathetic innervation, which affects the functioning of Muller's muscle, causing ptosis (drooping eyelid). This muscle is responsible for the minor elevation of the eyelid, and its dysfunction in Horner syndrome leads to mild ptosis.
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