In which part of human body rod cells and cone cells are present?

The correct answer is Eyes

Key Points

• Rod cells and cone cells are two types of photoreceptor cells that are found in the retina of the eyes.
• They are responsible for detecting light and converting it into signals that can stimulate biological processes and visual perception.
• Rod cells:
  • These cells are extremely sensitive to light and allow us to see in low-light or dim conditions, providing night vision.
  • However, rod cells do not perceive color and their resolution is also not very high, resulting in a lack of detail and sharpness in the images formed by solely the rod cells.
• Cone cells:
  • These cells function best in bright conditions and are responsible for our color perception and high-resolution vision.
  • Humans typically have three types of cone cells, each receptive to one of the primary color wavelengths (red, green or blue).
  • It is through the combined activity of these cells that we perceive the full range of colors.
• The human retina contains approximately 120 million rod cells and 6 million cone cells.
• The outer segments of these cells contain a special photopigment that undergoes a chemical change when it absorbs light.
• This leads to changes in membrane potential and the generation of electrical signals, which are then sent to the brain to perceiving images.