Neurotransmitters are chemicals within the body that transmit the message from the distal end of one neuron (presynaptic neuron) to the proximal end of the next neuron (postsynaptic neuron). While it sounds like a complicated process, it takes only milliseconds. Which one of the following sentences is false?
A) This is the mechanism by which the impulse is moved along the nervous system.
B) After the impulse is transmitted, the neurotransmitter goes through a process called reuptake, in which the neurotransmitter is returned to the postsynaptic neuron.
C) The receptors on the postsynaptic neuron receive the neurotransmitter.
D) Neurotransmitters are released from a neuron, then travel across the synapse to the next neuron.
Question 2
The EMT recognizes that dementia is typically observed as:
A) a chronic and irreversible condition.
B) altered mental status with a reversible underlying cause.
C) a chronic condition with a sudden onset.
D) altered mental status rooted in a psychiatric disorder.
(A) The structure of a neuron, showing the dendrites, nerve cell body, and axon. (B) Photomicrograph
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