Which of the following is NOT a receptor of skin sensation?

• A. Pacinian corpuscles
• B. Meissner's corpuscles
• C. Thermogenesis
• D. Ruffini endings

Answer: (C)

The correct answer highlights that thermogenesis is not a receptor of skin sensation. Thermogenesis refers to the production of heat, particularly in response to metabolic processes or environmental changes, rather than a sensory function.

In the context of skin sensation, receptors such as Pacinian corpuscles, Meissner's corpuscles, and Ruffini endings play crucial roles in detecting various stimuli. Pacinian corpuscles are sensitive to deep pressure and vibration, making them adept at sensing mechanical changes in the skin. Meissner's corpuscles are responsible for detecting light touch and are found in areas sensitive to tactile stimuli, like the fingertips. Ruffini endings respond to skin stretching and are involved in proprioception, helping the body understand its position and movement.

Understanding the specific roles of these receptors highlights why thermogenesis does not fit into the category of skin sensation receptors, as it pertains instead to metabolic function rather than sensory perception.