Rod Cell (Noun)
Meaning
A visual receptor cell that is sensitive to dim light.
Classification
Nouns denoting body parts.
Examples
- The rod cell is a type of photoreceptor in the retina that is responsible for peripheral and night vision.
- In low light conditions, the rod cells in the retina are more sensitive than cone cells and are able to detect even small amounts of light.
- The structure of a rod cell includes a long, thin outer segment that contains the light-sensitive pigment rhodopsin.
- Rod cells are more numerous than cone cells in the human retina, with approximately 120 million rod cells compared to 6 million cone cells.
- Damage to the rod cells in the retina can lead to night blindness, a condition in which a person has difficulty seeing in low light environments.