Question

Example of Merkel receptors and an example of Meissner copuscle.

Answer 1

Receptors are any cells or nerve endings that help in sensing external stimuli. Where sensory receptors are designed to sense the stimulus one received through sense organs. Which can be heat, cold, touch, light, etc.

Mechanoreceptors are a type of sensory receptor which have special tactile receptors within. there are four such tactile mechanoreceptors are present. They are:

1. Merkel’s disks: these are nerve endings that connect the dermis with the epidermal base. they are free nerve endings; which highly sense mild touch. they are found in both haired and hairless skin areas.

Example: the neurons that are found on lips and fingertips.

2. Meissner’s corpuscles: these are nerve endings found in the upper epidermis. they also sense mild touches also they can identify low-frequency vibrations. they are only found in hairless glabrous skin areas.

Example: the neurons found that are found on the fingertips and eyelids.

3. Ruffini ending: another nerve cells found on the skin, that detects skin stretch and deformations happening within the joints.

Example: found at the tip of the fingers, palm, etc.

4. Pacinian corpuscle: they are other neurons found deep within the skin layer. They can sense vibrations and pressure.

Example: found in the pancreas, genital regions, etc.

5. Krause end bulb: They are found in special regions of the skin. Their main function is for detecting cold.

These are the cells found in the skin which are either encapsulated or encapsulated. It helps in interpreting the sensory stimulus with the help of sensory nerves or free-nerve endings present.

Thus, Merkel receptors and Meissner corpuscle are two types of tactile mechanoreceptors. Both these types of neurons are necessary for detecting mild external stimuli and even with the help of Meissner corpuscle pressure variation also can be understood.