NEET PG DENTAL EXAM

EMBRYOLOGY

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Photoreceptors are ____
A
light receptors
B
temperature receptors
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -Rod and cone photoreceptors are specialized neurons that function in the initial step of vision. These light-sensitive cells lie at the back of the retina adjacent to the retinal pigment epithelium (RPE), a cell layer that is vital for the survival of photoreceptors.

Detailed explanation-2: -The retina is the back part of the eye that contains the cells that respond to light. These specialized cells are called photoreceptors. There are 2 types of photoreceptors in the retina: rods and cones.

Detailed explanation-3: -There are two types of photoreceptors: rods and cones. Rods are more sensitive to light, making them primarily responsible for vision in low-lighting conditions like at night. Cones are less sensitive to light and are most active in daylight conditions. The cones are also responsible for color vision.

Detailed explanation-4: -Vision depends on detecting light Most of our conscious vision stems from photoreceptors in the retina, the light-sensitive layer at the back of our eyeball. In animals with backbones (vertebrates), cells that detect light for vision are vaguely shaped like rods or cones, giving them their familiar names.

There is 1 question to complete.