tarsus.

About tarsus

The tarsi or tarsal plates are two comparatively thick, elongated plates of dense connective tissue, about 10 mm (0.39 in) in vertical dimension for the upper eyelid and 5 mm for the lower eyelid; one is found in each eyelid, and contributes to its form and support. They are located directly above the lid margins. The tarsus has a lower and upper part making up the palpebrae.