Sensory Receptors and Nerves: Comprehensive Details
Classified in Biology
Written on in English with a size of 3.6 KB
Sensory Receptors and Sensory Nerves
Sensory Receptors
Information from the environment and internal organs is detected by sensory receptors. These receptors can be:
- Surrounded by cells (not neurons)
- Connected with a neuron (sensory nerve) in which they will generate action potentials
- Specialized to respond to one particular form of energy
There are many different types of sensory receptors:
- Mechanoreceptors - detect touch and pressure
- Thermoreceptors - detect cold and warmth
- Nociceptors - detect pain
- Electromagnetic receptors - detect light
- Chemoreceptors - detect taste, smell, blood O2 and CO2 concentration, blood glucose, amino acids, and fatty acids
A receptor can be excited by:
- Mechanical deformation - stretches the receptor, opening ion channels
- Application