Card Set Information
What are organs of transductions?
depolarize the cell membrane or start the electrical impule in the neuron
What are thermorceptors?
detect hot or cold (temperature)
Type II- heat
End bulb of Krause- cold
What are Chemorecptors?
transducers that respond to chemical stimulus
depolarize the neuromembrane to set up an action potential
triggers smell emotions
What are Photorecptors?
rods and cones of retina
specialized cells undergo a bleaching process when stimulated by photons of light.
sets up a nervous impulse
Rods-black and white
What are Mechanorecptors?
List the Mechanorecptors
Light Touch-most superficial
Rapidly adapting (Meissener;s corpuscle)= lips, fingertips,gentialia, nipples
Hair root plexus= detects any slight movement of hair shaft
Rapidlly adapting (Pacinian corpusclej)=tendons, ligaments, picks up vibrations
located on peristium
Pain- naked or free nerve endings
surface of body has more of these
Propriocepton- where you are in space and time
muscle spindle= hands, feet, spine
contractions and relaxations of mm's
Overview of Nervous System.
interconnected cells numbering 100 billion
CNS- brain/spine-largest masses in body
PNS-input and output "wires"
connect to all the regions and most of organs in body
12 paired cranial nerves that connect head and neck
31 paired spinal nerves that connect neck, thorax,abdomen, pelvis, limbs
Autonmic-3parts- Sympathetic, parasympathetic, enteric