Question

activity 17 : quiz
module : nervous
topic : structures / type : combination

what structure is highlighted?

a. anterior cavity
b. sclera
c. cornea
d. iris
e. optic n. (cn ii)

Explanation:

Identify the highlighted structure in the diagram

Using the Eye Anatomy and Optic Nerve Anatomy knowledge points

• The diagram shows a sagittal histological section of the human eye.
• A specific structure at the posterior pole of the eye is highlighted in green.
• This structure exits the back of the eyeball (bulbus oculi) and carries visual information from the retina to the brain.
• The highlighted green structure is the optic nerve (Cranial Nerve II).

Match with the multiple-choice options

• Option A (Anterior cavity) refers to the fluid-filled space between the cornea and the lens.
• Option B (Sclera) is the outer white fibrous layer of the eye, shown in blue/purple wrapping the globe.
• Option C (Cornea) is the transparent anterior continuation of the sclera.
• Option D (Iris) is the colored muscular ring, located anterior to the lens (the lens is highlighted in red).
• Option E (Optic n. (CN II)) corresponds exactly to the green-highlighted structure exiting the posterior eye.

Answer:

• (A) Anterior cavity
• (B) Sclera
• (C) Cornea
• (D) Iris
• (E) Optic n. (CN II) (Correct answer)