Cutaneous receptor organs
- Cutaneous receptors organs are those sensory receptors present in skin.
- When skin sensed any sensation then it generates impulse which is sensed by these receptors present in dermis and epidermis.
Types of cutaneous receptors organ
a. Mechanoreceptors
- Also called Meisner’s corpuscles
- Present in dermis
- Sensed the touch sensation (mechanical stimulus)
- These neurons carry impulse towards CNS.
b. Corpuscular receptors
- Also called Pacinian corpuscles.
- Present in hypodermis or the base of dermis.
- Detect the Pressure
- These cells are connected by dendrites and carry impulse towards CNS.
c. Thermoreceptors
- These are branched free nerve ending
- Also called Ruffini’s ending and krauses’s end bulb.
- Detect the Temperature (heat or cold).
- This nerve carries impulse towards brain.
d. Nocireceptors
- Branched free ending
- Sensitive to Pain.
- Nocireceptors exposed when surface upto dermis is burned. If burnt in 450 C then it detects pain and signal pass to spinal cord or thalamus of brain.