Question

Merkel disc in the skin of rabbit are

• A. Tangoreceptor
• B. Pain receptor
• C. Thermoreceptors
• D. None of the above

Answer 1

The correct option is A Tangoreceptor

The touch or tactile receptors on the skin are also called as tangoreceptors. These are further classified into six types which include free nerve endings, root hair plexus, Merkel's discs, Meissner's corpuscles, Pacinian corpuscles and Ruffini corpuscles. The free nerve endings are situated between epidermal cells. These are sensitive to both touch and pressure. The root hair plexus is made up of free nerve endings to detect touch and hair movement. Merkel's discs are located in the lower epidermal layer of the glabrous or hairless skin. These receptors respond to fine touch and pressure. Meissner's corpuscles are sensitive to light touch and vibrations. These are located in the eyelids, lips, fingertips, nipples and external genitalia. Pacinian corpuscles are large receptors located in external genitalia. These receptors are sensitive to deep pressure and high-frequency vibrations. They are also found in the fingers and breasts. Ruffini corpuscles are located deep in the dermis and are sensitive to pressure and distortions of the skin.

Therefore, the correct answer is option A.