Class Notes (838,337)
Canada (510,861)
BIOB32H3 (80)
Lecture 10

BIOB32H3 Lecture 10: Lecture 10
Premium

2 Pages
59 Views
Unlock Document

Department
Biological Sciences
Course
BIOB32H3
Professor
Kenneth Welch
Semester
Winter

Description
BIOB32- Lecture 10 - The neurons or the axon of the neuron determines how fast the signal is propagated- depends on how well the sodium channel is imported into the axon, - The potassium that is coming out is the offsetting of depolarization - If you have a bigger tube, it will easily permit the flow of charge along the inside of the axon - The axons of the squid can be about 1 mm wide and this is long enough to stick something into the axon, we don’t need some fancy equipment and microscope for that - This is not the case of all animals because not all of the have the space - We have insulating cells that hope to prevent the nuclear charge across the membrane , in peripheral nervous system the Schwann cell does the same thing - Myelin cells reduces the, we are increasing the resistance to flow through. we are also reducing membrane capacitors  tendency of them to line up along the membrane inside and outside - The inside is relative negative compared to the outside - The distance along the electrical organisation increases Saltatory conduction - The action potential wave is not a continuous wave that continues along - Instead there is the jumping of action potential from one side to the other - The greater potential is great enough to allow depolarization to that threshold value to the next node of ranvier – action potential initiates there and so on and so forth (excitable) cell-to- cell communication - This involves the understanding of synaptic function - With relatively small amount of them we can begin to develop relatively relative amount of the circuit, circuits that can turn other circuits on or off Electrical synapse - The simplest form of synapses - We have the membrane of two different cells that are very very closely aligned with each other and they are connected with the gap junction - 1 connexion molecules open 6 connectin molecules - When they are open they can allow relatively small molecules to pass in and out - This is the fastest type of synapse because we do not have an additional step - We would see a high intensity of gap junction , this can connect other neurons as well - We want all the muscles
More Less

Related notes for BIOB32H3

Log In


OR

Join OneClass

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

Sign up

Join to view


OR

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.


Submit