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Superior tarsal muscle

superior tarsal muscle n.
A layer of smooth muscle that extends from the aponeurosis of the elevator muscle of the upper eyelid to the superior tarsus, is innervated by sympathetic nerves, and acts to hold the upper lid in an elevated position.


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  • Superior-vena-cava

    noun, plural superior venae cavae. 1. See under vena cava. noun, plural venae cavae [vee-nee key-vee] /ˈvi ni ˈkeɪ vi/ (Show IPA). Anatomy. 1. either of two large veins discharging blood into the right atrium of the heart, one (superior vena cava or precava) conveying blood from the head, chest, and upper extremities and the […]

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