Lexic.us

Definition of Rod cell

1. Noun. A visual receptor cell that is sensitive to dim light.

Definition of Rod cell

1. Noun. (anatomy) Any of the cylindrical photoreceptor cells in the retina that function in dim light levels. ¹

¹ Source: wiktionary.com

Medical Definition of Rod cell

1. Major photoreceptor cell of vertebrate retina (about 125 million in a human eye). Columnar cells (about 40m long, 1m diameter) having three distinct regions: a region adjacent to and synapsed with, the neural layer of the retina contains the nucleus and other cytoplasmic organelles, below this is the inner segment, rich in mitochondria, that is connected through a thin neck (in which is located a ciliary body) to the outer segment. The outer segment largely consists of a stack of discs membrane infoldings that are incompletely separated in cones) that are continually replenished near the inner segment and that are shed from the distal end and phagocytosed by the pigmented epithelium. The membranes of the discs are rich in rhodopsin, the pigment that absorbs light. (03 Jul 1999)

Lexicographical Neighbors of Rod Cell

Literary usage of Rod cell

Below you will find example usage of this term as found in modern and/or classical literature:

1. A Text Book of Physiology by Michael Foster (1900)
"The rod cell consists of an elongated oval nucleus placed vertical, at about the level of the middle of the nest. The scanty cell-substance surrounding the ..."

2. A Textbook of Physiology by Michael Foster (1891)
"The rod cell consists of an elongated oval nucleus placed vertical, at about the level of the middle of the nest. The scanty cell-substance surrounding the ..."

3. Medical Record by George Frederick Shrady, Thomas Lathrop Stedman (1897)
"Thus the outer rod cell is plunged deeply in the pigmented portion of the ... That the only change noted in the rod cell is that which occurs in the ..."

4. Normal Histology: With Special Reference to the Structure of the Human Body by George Arthur Piersol (1912)
"The cone-visual cell is composed of the same general divisions as the rod-cell, including the specialized outer part, the cone, and the body within the ..."

5. The Journal of Anatomy and Physiology (1879)
"(2) Triangular rod-cell; (1, 3, 4, and 5) dividing to form upper and lower cells. Fig. ... (2) Rod-cell showing rudimentary rods and the vacuole. Fig. ..."

6. The Encyclopaedia Britannica: “a” Dictionary of Arts, Sciences, Literature edited by Hugh Chisholm (1911)
"N, nerve fibres and cells. Pc, pigment-cell. Re, rod cell. apertures, and after branching extensively m the mesenchyma, end blindly ¡n peculiar hollow ..."

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