NEET PG DENTAL EXAM

Detailed explanation-1: -Pacinian corpuscles are rapidly adapting (phasic) receptors that detect gross pressure changes and vibrations in the skin. Any deformation in the corpuscle causes action potentials to be generated by opening pressure-sensitive sodium ion channels in the axon membrane.

Detailed explanation-2: -Meissner corpuscles consist of a cutaneous nerve ending responsible for transmitting the sensations of fine, discriminative touch and vibration.

Detailed explanation-3: -Meissner corpuscles are involved in skin movement and object handling detection, and their primary stimulation is through dynamic deformation. Ruffini corpuscles primarily sense skin stretching, movement, and finger position. Pacinian corpuscles sense vibrations and detect fine textures.

Detailed explanation-4: -The perception of vibratory sensation is by two main types of mechanoreceptors, Meissner corpuscles (MC) and Pacinian corpuscles (PC). MCs are large myelinated fibers that detect low-frequency vibration and are present in glabrous (smooth, hairless) skin on fingertips and eyelids.