PHYSIOLOGY
MUSCLE RECEPTORS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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You’d know where it was specifically on your thigh
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You’d know it was on your thigh, but not exactly where
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You’d know that it was somewhere on your lower extremity
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You wouldn’t know because your body would probably manifest this as referred pain
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Detailed explanation-1: -Pain Receptors are also called free nerve endings. These simple receptors are found in the dermis around the base of hair follicles and close to the surface of the skin (epidermis) where the hair emerges from the skin.
Detailed explanation-2: -Ruffini corpuscles primarily sense skin stretching, movement, and finger position. Pacinian corpuscles sense vibrations and detect fine textures.
Detailed explanation-3: -The second-order cells relay the message through well-defined pathways to higher centers, including the brain stem reticular formation, thalamus, somatosensory cortex, and limbic system. It is thought that the processes underlying pain perception involve primarily the thalamus and cortex.
Detailed explanation-4: -The relatively unspecialized nerve cell endings that initiate the sensation of pain are called nociceptors (noci-is derived from the Latin for “hurt”) (see Figure 9.2).