The Somatic Senses

The Somatic Senses - encapsulated nerve receptors that...

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The Somatic Senses The somatic (general) senses collect  information about cutaneous  sensations (tactile sensations on the  surface of the skin) and proprioceptive  sensations. The following stimuli are  detected: Tactile stimuli are detected by  mechanoreceptors and produce  sensations of touch and  pressure: Merkel discs are  receptors with free nerve 
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endings that detect  surface pressure (light  touch). They are located  deep in the epidermis. Root hair plexuses are  receptors with free nerve  endings that surround hair  follicles and detect hair  movement. Corpuscles of touch  (Meissner's corpuscles)  are receptors with  encapsulated nerve  endings located in the  dermal paillae (near the 
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surface) of the skin that  detect surface pressure  (light touch). Pacinian corpuscles are 
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Unformatted text preview: encapsulated nerve receptors that detect deep pressure and are located in the subcutaneous layer (below the skin). • Thermal stimuli are detected by free nerve ending thermoreceptors sensitive to heat or cold. • Pain stimuli are detected by free nerve ending nociceptors. • Proprioceptive stimuli are detected by the following receptors: • Muscle spindles are mechanoreceptors located in skeletal muscles. They consist of specialized skeletal muscle fibers enclosed in a spindle-shaped capsule made of connective tissue. • Golgi tendon organs are mechanoreceptors located at the junctions of tendons and muscles. • Joint kinesthetic receptors are mechanoreceptors located in synovial joints....
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This note was uploaded on 12/04/2011 for the course ANTHRO 2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.

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The Somatic Senses - encapsulated nerve receptors that...

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