Describe the basic processes involved in the transmission of information from the beginning of one neuron the beginning of the next neuron
What will be an ideal response?
ANSWER:
?When a neuron is at rest, meaning it is not actively conducting a signal, there is an imbalance in the types of ions found inside and outside the cell walls of the neuron. When a neuron receives input from other neurons, these incoming signals enter at the dendrites and travel across the cell body to the axon. These signals can make the inside of the cell more positive or more negative. If the incoming signals make the inside of the neuron more positive, the inside of the neuron may become positive enough to reach the neuron’s threshold of excitation and the neuron fires off an action potential. When the action potential reaches the axon bulb of the presynaptic (sending) neuron, it causes the release of neurotransmitters into the synapse. The neurotransmitter molecules float in the fluid-filled synapse. Some of them will quickly drift across the synapse and come into contact with the tulip-shaped receptor sites lined up on the dendrites of the postsynaptic (receiving) neuron.
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Jeong is having his brain scanned. As the machine is working, he is asked to read words on a screen. He is most likely having a(n):
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A neuropeptide that may signal satiety is a. thyroid-stimulating hormone (TSH)
b. neuropeptide Y (NPY). c. cholecystokinin (CCK). d. adreno-corticotropic hormone (ACTH).
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a. his mother b. his father c. one of his older sisters d. one of his older brothers