Sensory and Motor Systems

3 Pages
Unlock Document

Simon Fraser University
Biological Sciences
BISC 101
Tony Williams

Chapter 50 Sensory and Motor Systems Key concepts for sensory systems y Stimuli represent forms of energy and sensory cells convert this energy to changes in membrane receptor potentials which then modulate action potential y Sensory cells typically have a single receptor type specific to a particular stimulus y Sensory receptors can be classified based on the nature of the stimulus they induce 5 types 1 Mechanoreceptors mechanical 2 Chemoreceptors 3 Electromagnetic receptors light 4 Thermoreceptors temperatures 5 Pain receptors ion channel functionmembrane permeabilitymodulate membrane potentialTwo main classes of sensory receptors Some receptors are specialized neurons others are specialized cells that regulate neurons or epithelial cells Sensory receptors transduce energy in a stimulus into a receptor potential that modulates transmission of action potentials to CNSCoding of stimulus intensity y Response of a sensory receptor varies with stimuli of different intensities y Receptor neuron larger receptor potential frequent action potentials y Not sensory neuron larger receptor potential more NT released therefor
More Less

Related notes for BISC 101

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.