Question

Which of the following in the rabbit’s eye is responsible for frictionless blinking?
a) Lachrymal glands
b) Meibomian gland
c)Harderian gland
d)All of the above

Answer 1

Hint: Frictionless blinking is present in the eyes of the rabbit. It is important as it helps in cornea lubrication and prevents it from getting dried up. If the friction present in the eye can cause major damages to the cornea of the eye.

Complete answer:
The frictionless blinking in the eyes of the rabbit is due to the presence of meibomian glands. Meibomian gland helps in the secretion of the oil-like substance which lubricates the cornea and provides frictionless blinking. It also prevents the drying of the eyes. This oil-like substance prevents the friction from arising at the two eyelids present. they are usually located at the margin of the eyelids. They help in the prevention of water getting evaporated from the surface of the eyes. If the water is lost from the eyes, they may become dry, sore, and swollen. The eyes usually become red and may feel a little gritty in texture if the gland stops its release of oil secretion. The release of less secretion from the eyes may lead to the blurriness of the vision. The meibomian gland is also present in humans and performs the same function as that of the rabbit’s eye.

So, the answer is ‘meibomian gland’.

Note: In humans also the presence of Meibomian glands can be seen. Its secretion may get blocked to the dirt and accumulation of eye products in the eyelid. Proper cleaning may remove its clogging. If hygiene is not maintained it may lead to gland dysfunction. The symptoms that appear should be treated right away otherwise it may lead to the disappearance of glands permanently. The gland helps in providing lubrication to the eyes.