Touch, Pressure, Temperature and Pain
Pain, pressure, touch and temperature change
the arrector pili
Sensory receptors are a type of sensory nerve. The sensory receptors that are specialized to respond to light energy are called stimuli.
Your main sensors in the skin are those for some types of pain or touch. We can distinguish a sharp from a blunt touch, and a brushing with a wisp of cotton wool will elicit a different sensation again. Vibration is a separate touch sensation again, as is also the detection of heat and cold. Perhaps you could consider smell (olfaction) to be a skin sense, but here the smell is first dissolved in the mucus before detection. [I had a side effect of a drug, which numbed the sense of vibration - it was only felt as a blunt touch. The operand was a tuning fork, which produces a small vibration at the stem. The proper sensations returned after >12 months off the drug.]
There are four nerve endings in the skin namely: Pacinian nerve endings for pain Krause nerve endings for cold Ruffinis nerve endings for Heat and warm Endorphins-- natural pain killers SAM MKT :)
receptors
Sensation is Conscious awareness of stimuli received by sensory receptors
Axons have no receptors for stimuli, only the dendrites off of the soma are capable of having receptors for different stimuli
Receptors are groups of specialised cells. They detect a change in the environment stimulus. In the nervous system this leads to an electrical impulse being made in response to the stimulus. Sense organs contain groups of receptors that respond to specific stimuli.
Receptors or more precisely, sensory receptors.
Sensory receptors enable you to respond to stimuli in the environment of an organism. Some sensory receptors respond to taste and smell while others respond to physical stimuli.
Touch - Mechanical receptors Light- Photo receptors Heat- Thermo receptors