What structure is the arrow pointing to?
Incorrect. The inferior orbital vein drains blood from the eye. The indicated structure is responsible for downward movement of the eye. Try again!
Incorrect. The inferior tarsus is a collagenous tissue within the lower lid that gives it firmness. It is also the site of Meibomian glands, which secrete the oily layer of tear film. The indicated structure is responsible for downward movement of the eye. Try again!
Correct. This muscle moves the eye downward and is supplied by the inferior division of cranial nerve III.
Incorrect. The inferior orbital septum is a layer of collagenous tissue that separates the lid tissue from orbital tissue, acting as a barrier to infection spreading inward from the skin. The indicated structure is responsible for downward movement of the eye. Try again!