Sensory And Motor Pathways Flashcards
Special senses
Senses with receptors that are stimulate specific sensory organs.
This includes vision (eye), hearing(ear), smell (nose) and taste (tongue)
Processes of sensation
- Stimulation: when something touches the receptor(a change in the environment)
- Transduction: converting one energy to the other
- Conduction: the action potential moves along the neuron(could be myelinated or unmyelinated)
- Translation: translates the impulse into a sensation
Unencapsulated nerve endings
Bare dent rites of first-order sensory neurons
Encapsulated nerve endings
Dentrites of first-order sensory neurons enclosed in a connective tissue capsule
Sensory receptor cells
Highly specialized separate cells that synapse with a first-order sensory neuron
General senses
Senses with receptors spread throughout the body.
Provide information about touch, pressure, itch, vibration, temperature, proprioception and pain
Exteroreceptor
Located at or near the body surface
Interoreceptor
Located in blood vessels, organs and the nervous system
Proprioreceptor
Tells us where we are
Located in muscles
Mechanoreceptor
Detects mechanical stimuli
Thermoreceptor
Detects changes in temperature
Nociceptor
Responds to painful stimuli
Photoreceptor
Detects light
Chemoreceptor
Detects chemicals in the mouth, nose, and body fluids
Osmoreceptor
Detects change in osmotic pressure