Question

Canal of Schlemm occurs in
(a) Middle earth
(b) Internal ear
(c) Aqueous chamber of the eye
(d) Vitreous chamber of the eye

Answer 1

Hint: Canal of Schlemm is present as a circular canal at the junction of sclera and cornea. It is present in that part of the eye that contains a transparent watery fluid. It helps in the drainage of excess fluid building up in the part it is present in.

Complete answer:
Canal of Schlemm is a circular lymphatic- like vessel present in the eye, that collects aqueous humour from the anterior chamber of the eye. It drains the excess fluid collected in the aqueous chamber of the eye. The canal is an endothelium- lined tube that resembles a lymphatic vessel. On the inside, nearest to the aqueous humour, it is covered by a trabecular meshwork and makes the greatest contribution to the outflow resistance.
A blockage in the canal of Schlemm can cause an increase in the intraocular pressure due to which the optic nerve may get damaged. Such a condition is called Glaucoma and it can lead to blindness.

So, the correct answer is, “Aqueous chamber of the eye”.

Note: The aqueous chamber containing the aqueous humour is divided into two parts; an anterior chamber and a posterior chamber. - The anterior chamber contains the aqueous humour and is a space inside the eye between the iris and the innermost corneal surface that is the endothelium. - The posterior chamber is present as a space behind the peripheral part of the iris and ahead of the suspensory ligament of the lens and the ciliary processes.