Matching Skin Receptors with Their Functions

This question requires matching different types of mechanoreceptors in List - I with their specific sensory functions described in List - II.

Analysis of Receptor Functions:

• A. Free nerve endings: These receptors are responsible for detecting crude touch, pressure, pain, and temperature. They match with III. Detect touch and pressure.
• B. Meissner corpuscle: These are specialized for detecting light touch, flutter, and low-frequency vibrations. They are highly sensitive to changes in texture and shape when gripping objects, and respond to the movement of objects across the skin. This matches with I. Sensitive to movement of objects over the surface of the skin, as well as to low frequency vibration.
• C. Ruffini endings: These receptors respond to sustained deep pressure, skin stretch, and proprioception. They signal continuous touch and pressure sensations. This corresponds to IV. Heavy prolonged touch and pressure signals.
• D. Pacinian corpuscles: These are rapidly adapting receptors sensitive to deep pressure and high-frequency vibrations. They respond effectively to rapid mechanical indentation or vibration. This matches with II. Stimulated only by rapid local compression of the tissues.

Correct Matching:

Based on the analysis:

• A matches with III
• B matches with I
• C matches with IV
• D matches with II

Therefore, the correct combination is A-III, B-I, C-IV, D-II.