Class Notes (839,590)
Canada (511,419)
Physiology (646)
PSL300H1 (221)

PSL 300 Lecture 5

2 Pages

Course Code
Gillian Mac Kay

This preview shows 80% of the first page. Sign up to view the full 2 pages of the document.
PSL300 LECTURE 5RECEPTOR POTENTIALReceptor PotentialDepolarization of sensory receptors upon receipt of specific energy eg light heat pressure etcEXCEPTION Photoreceptors hyperpolarizeReceptor proteinEmbedded in sensory cell membraneChanges shape when specific energy receivedEitherCation channel opened FastestAn enzyme is activated via Gprotein coupling SlowGprotein and enzyme activations amplify weak signalseg Olfactory systemamplification of signalsStress Sensory axons are always unmyelinatedOn sensory receptors exocytosis does not required action potential only depolarizationAxon terminal not somaSlowly adapting receptor potentialAmplify the onset of the signal that decays slowly overtime to steady stateTransmission of signal2 categories of sensory cell transmissionSensory cell generates an action potential at a spikegenerating zoneSensory cell releases vesicles when depolarized impulses generated in postsynaptic neuronReceptor AdaptationSlowlyAdapt
More Less
Unlock Document

Only 80% of the first page are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


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.