Action Potentials
Does the size of the stimulus affect action potential duration?
Nope!
The synapse is the functional connection between the neuron and what?
the cell it is signaling
Form epithelial lining of ventricles
Ependymal
What controls the changes in membrane potential?
Are CNS axons able to regenerate?
Nope!
What reestablishes the resting potenital of the cell?
Na+/K+ pumps
the presynaptic neuron
Also called neurolemmocytes
Schwann cells
+30mV
What is a tract?
Bundle of axons in the CNS
What may a stronger stimulus do to activate more neurons in a nerve?
Recruitment
Are synapses electrical or chemical?
Tricked ya! They can be either!
Influences interactions between neurons and neurons and blood
Astrocytes
Is hyperpolarization excitatory or inhibiting?
inhibitory
What are the open spots on the axon called?
Nodes of Ranvier
During what time can the neuron NOT become excited again?
Refractory periods
What joins cells?
gap junctions
Produce white matter in CNS
Oligodendrocytes
What makes the Voltage-Gated K+ Channels repolarize to K+ equilibrium potential?
K+ rushing out of cell
What two cells make nervous tissue?
Neurons and Neuroglia
What is the ability of neurons to conduct charges through their cytoplasm called?
Cable Properites
In the CNS, the second cell signaled will be what?
Another neuron
Gullian-Barre syndrome affects what cell?
Schwann cells- they produce the myelin sheaths in the PNS, which is that is attacked by the disease.
What is it called when the voltage-gated Na+ channels open, and the cell becomes more permeable to Na+?
Depolarization
What are most nerves classified as?
Mixed nerves- sensory and motor neurons.