41-42-nervsysoutl

41-42-nervsysoutl - Biology 3 Lecture: Nervous System (SBM:...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
© 2011 copyright Marta D. de Jesus I. Organization A. Earliest nervous systems 1. diffuse nerve nets 2. nerves 3. ladder-type system 5. multiple sets of ganglia 6. in organisms like us a. b. 1) 2) (i) (ii) B. 4 functions 1. reception 2. transmission 3. integration 4. transmission II. Cells A. support cells 1. microglia 2. astrocytes 3. oligodendrocytes 4. ependymal cells 5. Schwann cells B. neurons 1. cell body 2. dendrites 3. axon a. Node of Ranvier b. axon collaterals c. synaptic terminals 4. kinds of neurons 3 different functions
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
C. organization 1. circuits 2. nerves III. signaling A. resting potential 1. maintained by 2. additional help by 2. polarized B. strong signal: action potential 1. start at 2. depolarization 3. at –55 mV 4. repolarization 5. reset 6. propagation C. saltatory conduction D. “all or none” law E. to another cell 1. electrical synapses 2. chemical synapses
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

41-42-nervsysoutl - Biology 3 Lecture: Nervous System (SBM:...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online