Ch 11: Comtinued Flashcards
Absolute in a refractory Period.
Generating action potential, not possible 
Relative refractory Period.
Cell undergoing hyper polarization, trying to fire, another action potential
What does propagate action potential do
Allowing action potential to travel along the axon
The speed of action potential
Myelinated axon is faster
Type A
Larger in diameter, myelinated
Type B
Medium diameter, lightly myelinated
Type C
Smaller diameter, unmyelinated
Synapse can be
-Nerve to nerve
-Nerve to Oregon
-Nerve to gland
Electrical synapse
Change and membrane
Example: ligand gated channel
Chemical synapse
Neuro transmitters
Example : acetylcholine
What are the two cells in a synapse?
Presynaptic and postsynaptic membrane
What is a good example of electrical synapse
Cardiac muscle cell
What’s a good example for chemical synapse?
Neuromuscular junction
What is intercalated discs?
Dark disc on muscle cell in heart
Neuro transmitter removal
ACH runs into an enzyme called said ACHesterase that will Cleve them with Choline and acetic acid
What will inhibiting the enzyme do to the muscle cell
It will increase asetycholine and contracting muscle
Neuro transmitter of norepinephrine
Enzymes break down the norepinephrine is monoamine oxidase
What will decreasing the monoamine oxidase due to norepinephrine?
It will increase
Spatial summation
Is one action potential per synapse
Temporal summation
Two action potential per synapse
Combine spatial and temporal summation
-AP inhibits and excites sell with other AP
-Has multiple in single AP per synapse
If there is more excitatory synapse than inhibits synapse, it’s
Action potential is fired
If there’s more inhibiting synopsis, then excitatory synapse is it’s
There’s no AP
Convergent pathway
Many converge and synapse with smaller number of neurons
Divergent pathways
Small number of presynaptic neurons with postsynaptic neurons
Oscillating circuit
Output, cause, reciprocal activation
