STUDY GUIDE: Lecture 18: Electrical communication - the nerve
05/05/2004 09:53 AM
Purves 6th edition (5th ed.)
- Ch. 44 esp 785-792 (Ch. 41 esp 916-922) [Ch 44
esp 855-863] Synapses
Action Potential, cont. -- Propagation
- Generating an action potential -- ion
- Moving the message quickly down the neuron
- increase diameter -- decrease axial
- myelination --
resistance (decrease ion flow out)
Synaptic Transmission -- Moving the message on to
the next cell
- release of neurotransmitters
- Next Time -- wrap up of receptors, summation,
organization of neurons into circuits & overall nervous system
More Detailed Readings in Texts
Both these texts give similar and detailed
explanations, so it's a good idea to read one of them, but don't
bother reading both:
- Sherwood 5th edition [4th edition]
- Ch 4 -- 113-128 [103-119]
myelination & synapses
- Becker 5th edition (4th ed)
- 241-243 (248-251) myelination
- 243-250 ( 251-259) synapses
Clear-Cut Endings to Complex Beginnings: Researchers Probe the Origins
of Charcot-Marie-Tooth Disease. A disease of myelin.
- Brain Briefings Short readings on major
research findings from the past 4 years. Compiled for the general public by the
Society for Neurosciences.
- Related Nobel prize research
- Methods in neuroscience
|Test yourself - The nuts and bolts
- What are the advantages of having myelinated
neurons? If there are these advantages, why aren't all neurons
- What happens when the action potential reaches
the pre-synaptic side of the axon terminal?
- What happens on the post-synaptic side?
- Synapses are classified as inhibitory vs
excitatory and direct vs. indirect. What are the features of each kind? Why
are direct/indirect sometimes called fast/slow instead?
- What are the common neurotransmitters?
|Test yourself - Problem solving
Problem Set #8: Questions 8-2 part D,
8-9 (except C), 8-10, 8-11, & 8-17.