See Also: membrana nictitans(medicine)
spasmus nictitans(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
Medicine Lodge Memorial Hospital- Medicine Lodge(health)
Orthomolecular medicine (orthomolecular nutritional medicine, orthomolecular therapy)(health)
membrana(medicine)
membrana choriocapillaris(medicine)
membrana cordis(medicine)
membrana cerebri(medicine)
membrana cricothyroidea(medicine)

membrana nictitans (medicine)


membrana nictitans -->
plica semilunaris conjunctivae


The semilunar fold formed by the palpebral conjunctiva at the medial angle of the eye, a fold of the conjunctival mucous membrane found in many animals; normally partially hidden in the medial canthus of the eye when at rest, it may be extended to cover part or all of the cornea in a winking-like action to clean the cornea, as in birds.

Synonym: membrana nictitans, nictitating membrane, palpebra III, palpebra tertia, third eyelid.

Synonym: plica lunata, plica semilunaris of eye, semilunar conjunctival fold.