Question

Choose the odd one out of the following terms given and name the category to which the others belong.

• A. Aqueous humour
• B. Vitreous humour
• C. Iris
• D. Central canal.

Answer 1

The correct option is D

Central canal.

The correct option is D.

Explanation of correct option :

1. The central canal is a space filled with cerebrospinal fluid that runs the length of the spinal cord.
2. Central canal is a part of spinal cord.

Explanation of incorrect options:

Option A:

1. Aqueous humor is a clear, watery fluid released by the ciliary glands into the region between the lens and the cornea (anterior and posterior chambers).
2. It is a part of eye.

Option B:

1. Vitreous humor is a colorless, translucent, jelly-like liquid that fills the gap between the eyeball's lens and retina.
2. It is a part of eye.

Option C:

1. The iris is a visible colored ring that extends anteriorly from the ciliary body, lying behind the cornea and in front of the lens.
2. It is a part of eye.

Final answer: The odd one out is central canal.