<prompt> Oily substance secreting gland is: September 2009Sweat glandMeibomian glandSalivary glandLacrimal gland  <response>: Ans. B: Meibomian glandThe meibomian glands or tarsal glands are a special kind of sebaceous glands at the rim of the eyelids inside the tarsal plate, responsible for the supply of meibum, an oily substance that prevents evaporation of the eyes tear film, prevents tear spillage onto the cheek, makes the closed lids aiight and acts as a blockade for tear fluid, trapping tears between the oiled edge and eyeball 