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Chapter 18:General Senses
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17
Anatomy
Undergraduate 1
05/17/2010

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Term
exteroceptors
Definition
receptors classified if they provide info about the external environment
Term
interoceptors
Definition
monitor conditions inside the body
Term
nociceptors
Definition
respond to a variety of stimuli ussually associated with tissue damage
Term
2 types of nociceptors
Definition
fast and slow pain.
fast pain-prickling
slow pain-burning and aching
Term
thermoreceptors
Definition
respond to changes in temp. also conduct sensations along the same pathaway that carry pain sensations.
Term
mechanoreceptors
Definition
respond to physical distortion, contact, or pressure on their cell membranes
Term
tactile receptors
Definition
to touch, pressure, and vibration
Term
baroreceptors
Definition
to pressure changes in the walls of bld vessels and the digestive, reproductive and urinary tracts
Term
proprioceptors(muscle sprindles)
Definition
to position of joints and muscles
Term
fine touch and pressure receptors
Definition
probide detailed info about a source of stimulation
Term
crude touch and pressure receptors
Definition
are poorly localized
Term
important tactile receptors include
Definition
free nerve endings, the root hari plexus, tactile discs(Merkel's discs)
Term
location of Merkel cells
Definition
stratum germainatum that are sensitive to fine touch.
Term
tactile corpuscles(meissner's corpuscles),ruffini corpuscles, and lamellated corpuscles(pacinian corpuscles)
Definition
Term
baroreceptors(stretch receptors)
Definition
monitor changes in pressure. respond immediately but adapt rapidly. in walls of major arteries and veins that respond to change in BP. receptors along digestive tract help coordinate reflex activities of digestion.
Term
proprioceptors
Definition
monitor position of joints, tension in tendons and ligaments, and the state of muscular contraction
Term
chemoreceptors
Definition
respond to water-soluble and lipid-soluble substances that are dissolved in the surrounding fluid. they monitor the chemical composition of body fluids
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