Where are photoreceptors located on?a. Sclerab. Corneac. Retinad. Lense. Pupilf. Optic Disc

Break Down the Problem

1. Identify the location of photoreceptors.
2. Evaluate each option provided to determine if it contains photoreceptors.

Relevant Concepts

Photoreceptors are sensory receptors in the retina of the eye that detect light. The main types are rods and cones, responsible for vision under different lighting conditions and color vision, respectively.

Analysis and Detail

1. Sclera: This is the white outer layer of the eyeball and does not contain photoreceptors.
2. Cornea: This is the transparent front part of the eye, responsible for light refraction, but it does not contain photoreceptors.
3. Retina: This is the light-sensitive layer at the back of the eye where photoreceptors (rods and cones) are located.
4. Lens: This is a transparent structure that helps focus light onto the retina, but it does not contain photoreceptors.
5. Pupil: This is the opening that allows light to enter the eye; it does not have photoreceptors.
6. Optic Disc: This is the point where the optic nerve exits the eye and has no photoreceptors, resulting in a blind spot.

Verify and Summarize

Photoreceptors are only located in the retina. All other options listed do not comprise photoreceptors.

Final Answer

c. Retina is the correct answer where photoreceptors are located.