![]() When strong enough to reach threshold they can directly trigger an action potential along the axon of the sensory neuron. Graded potentials in free and encapsulated nerve endings are called generator potentials. The cells in the retina that respond to light stimuli are an example of a specialized receptor cell, a photoreceptor. Which is an example of a specialized sensory receptor cell? Pacinian corpuscles and Ruffini endings lie deeper in the skin Pacinian corpuscles detect pressure. They have very small receptive fields, therefore they can discriminate between two sharp points which are located very close together. What is the function of encapsulated receptors of skin? The joint receptors are similar to the encapsulated endings in skin and tendon and are found in the joint capsule and ligaments. The proprioceptive receptors in muscle are also encapsulated and include the muscle spindle and Golgi tendon organ. ![]() The peripheral end of the axon contains encapsulated proteins called transduction proteins (TRP), which can be activated by a specific stimulus. ![]() Nociceptors respond to certain temperature range and mechanical stimulus. Ruffini endings detect stretch, deformation within joints, and warmth. Meissner’s corpuscles respond to touch and low-frequency vibration. Meissner’s corpuscles, Ruffini endings, Pacinian corpuscles, and Krause end bulbs are all encapsulated. Merkel’s disks, which are unencapsulated, respond to light touch. Primary mechanoreceptors: Four of the primary mechanoreceptors in human skin are shown. Which receptor is an example of encapsulated nerve endings?Įxamples of the encapsulated nerve endings include the Meissner’s corpuscle, the Pacinian corpuscle, the Ruffini nerve endings, and the neuromuscular junctions.
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