Synaptic Transmission Flashcards
(18 cards)
The ion necessary to initiate the release of acetylcholine into the synaptic cleft is? A.sodium B.potassium C.calcium D.chloride E.zinc
C acetylcholine (choline) released due to chlorine
EPSP means
excitatory post synaptic potential
IPSP means
Inhibitory post synaptic potential
Glutamate is what type of neurotransmitter
Excitatory
Glycine is what type of neurotransmitter
Inhibitory within the spine
GABA is what type of neurotransmitter
Inhibitory within the brain
Acetylcholine is what type of neurotransmitter and what receptors does it activate
Excitatory; Nicotinic and Muscarinic receptors within PNS And CNS
Dopamine plays what role
Executor of reward pathway
Tryptophan is the precursor of what?
Serotonin
Histidine is the precursor of what?
Histamine
Tyrosine is the precursor of what?
Dopamine, Noradrenaline, Adrenaline
Example of a peptide neurotransmitter
Opioids
When a second EPSP arrives at a single synapse before the first effects have disappeared, what occurs A. Spatial Summation B. Temporal summation C. Inhibition of the impulse D. Hyperpolarization E. Decrease in speed of transmission
A. As the sum of the two signals occurs simultaneously at the synapse SPATIAL summation occurs
Integration means
Proccessing of information
Divergence means
Number of neurons signal reaches increases
Large number of presynaptic neurons providing input to a single post synaptic neuron is known as
Convergence
Saltatory conduction occurs when
an axon is myelinated due to the insulation it brings
Which of the following processes does NOT cause inactivation of neurotransmitter molecules from the synapse? A.precipitation into aggregates B.diffuse out of the synaptic cleft C.inactivated by enzymes D.returned to axon terminals E.transported into glial cells
A
