Rod Cell
Rod cells, or rods, are photoreceptor cells in the retina of the eye that can function in less intense light than can the other type of visual photoreceptor, cone cells. Rods are concentrated at the outer edges of the retina and are used in peripheral vision. On average, there are approximately 125 million rod cells in the human retina. More sensitive than cone cells, rod cells are almost entirely responsible for night vision.
Read more about Rod Cell: Structure and Function, Sensitivity, Response To Light
Famous quotes containing the words rod and/or cell:
“From pleasure of the bed,
Dull as a worm,
His rod and its butting head
Limp as a worm ...”
—William Butler Yeats (1865–1939)
“A cell for prayer, a hall for joy,—
They treated nature as they would.”
—Ralph Waldo Emerson (1803–1882)