Stuck on a problem? Get great tutoring at an affordable price with Chegg. Click here to join and get your 1st 30 minutes Free!

Ptosis

From Biology-Online Dictionary
Jump to: navigation, search

ptosis

1. (Science: anatomy) The prolapse of an organ or part.

2. (Science: clinical sign) The drooping of the upper eyelid from paralysis of the third nerve or from loss of sympathetic innervation.

Origin: Gr. Ptosis = fall