The retina in the back of your eye contains rods and cones. Rods allow us to differentiate between black and white, or light and dark. Cones allow us to distinguish between colors. The periphery of our vision is composed mainly of rods and the central part of out vision is composed mainly of cones. The fovea is a small indentation in the retina, directly in the center of our vision. It is composed of only densely packed cones. This is the reason why we often have a hard time seeing something in the dark unless we look slightly away from it.
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The receptors are arrayed along the back of the interior of each eye, in the tissue called the retina.
There are two types of cells that act as photoreceptors in the eye: rods and cones. Rods detect only the presence or absence of light without distinguishing between colors, thus giving black and white vision (as at night). Cones detect colors in the images but are less sensitive, i.e. they require more light to function.
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The receptors of sight arethe specialized rod cells and cone cells on the retina in the back of the eye.
More cool receptors than warm receptors in the skin.
nicotinic acetylcholine receptors (nAChR, also known as "ionotropic" acetylcholine receptors) are particularly responsive to nicotinemuscarinic acetylcholine receptors (mAChR, also known as "metabotropic" acetylcholine receptors) are particularly responsive to muscarine.Nicotinic and muscarinic are two main kinds of "cholinergic" receptors.
Cutaneous Sensory Receptors are clustered in certain spots instead of being uniformly distributed. This clustering is called punctate distribution.
The Dermis layer contains the sensory nerve fiber, so it is the Dermis layer that contains sensory receptors for touch.
olfactory receptors