Superior tarsal muscle
General Information | |
---|---|
Latin | Musculus tarsalis superior |
Greek | |
TA98 | |
TA2 | |
FMA | |
Details | |
System | |
Artery | |
Vein | |
Nerve | Sympathetic trunk |
Lymphatic drainage | |
Precursor | |
Function | |
Identifiers | |
Clinical significance | |
Notes | |
The Superior tarsal muscle (also known as Müller's muscle) is a smooth muscle extending from the levator palpebrae superioris muscle to the superior tarsus and palpebral conjunctiva. It is innervated by the sympathetic nervous system and aids in the elevation of the upper eyelid.
Structure[edit | edit source]
The superior tarsal muscle originates from the undersurface of the levator palpebrae superioris muscle and inserts into the superior tarsus and palpebral conjunctiva. It is a thin, red-colored muscle, approximately 12 mm in width.
Function[edit | edit source]
The primary function of the superior tarsal muscle is to assist in the elevation of the upper eyelid. It is responsible for maintaining the upper eyelid's position once it has been elevated by the levator palpebrae superioris muscle. The muscle is innervated by the sympathetic nervous system, which means it is not under voluntary control.
Clinical significance[edit | edit source]
Damage to the superior tarsal muscle can result in ptosis, a condition characterized by drooping of the upper eyelid. This can occur due to trauma, aging, or neurological disorders.
See also[edit | edit source]
References[edit | edit source]
Superior tarsal muscle[edit | edit source]
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