A&P Ch. 15: General Senses

Different Types of General Senses

Temperature, pain, itch, touch, vibration, chemoreception, proprioceprion

Compare response to stimuli of general receptors and special receptors: GENERAL

Dendrites of sensory neurons

-when stimulated, fire receptor potentials that generate action potentials in their axons

Compare response to stimuli of general receptors and special receptors: SPECIAL

Highly specialized cells that can only fire receptor potentials

-communicate to the first order neuron that fires an action potential

Describe how sensory information is interpreted along the "labeled line"

The CNS interprets sensory information entirely on the basis of the line over which it arrives

Compare and give examples for phasic and tonic receptors: PHASIC

Inactive, turn on with stimulation

-root hair plexus

Compare and give examples for phasic and tonic receptors: TONIC

Always active

-pain receptors

Give an example if adaptation in sensory receptors

Getting used to a smell in a room

Getting in a hot bath -> Starts to not feel hot

Eyes adjusting to dark room

Describe various types of nociceptiom

Temperature extremes

Mechanical damage

Dissolved chemical

List the various types of mechanoreceptors

Tactile receptors, proprioceptors, baroreceptors

Tactile receptors

touch, pressure, vibration

Proprioceptors

Positions of joints and muscles

Baroreceptors

Detect pressure changes

Where in the body does chemoreception occur?

In the blood