The sensation of deep pressure is detected by which type of receptor?

The sensation of deep pressure is detected by Pacinian corpuscles. These specialized nerve endings are located deep within the dermis and in various tissues throughout the body, including joints and the connective tissue surrounding organs. They are particularly sensitive to vibrations and pressure changes, making them integral to the sensation of deep pressure.

Pacinian corpuscles consist of a layered structure that allows them to respond quickly to changes in pressure, and their activation leads to the perception of intense pressure or vibration. This capability is why they play a significant role in the tactile system, highlighting their function in detecting not just light touch but also the deeper sensations that involve greater degrees of force applied to the skin or tissue.

In contrast, the other types of receptors listed have different primary functions. Muscle spindles are primarily involved in detecting the stretch and position of muscles, Meissner's corpuscles are more sensitive to light touch and texture, and Ruffini endings detect skin stretch and contribute to the perception of the position of joints. Hence, Pacinian corpuscles are the correct receptors for deep pressure sensation due to their structure and location.