When a Neurotransmitter Molecule Binds Briefly with a Receptor Site

question 10

Multiple Choice

When a neurotransmitter molecule binds briefly with a receptor site, changes occur in the receiving neuron's membrane. If there is a voltage shift in a negative direction then the effect is:

• A) inhibitory, and so the probability that the receiving neuron will fire decreases.
• B) likely to lead to the development of multiple sclerosis.
• C) excitatory, and so the probability that the receiving neuron will fire increases.
• D) likely to lead to the development of Parkinson's disease.

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Definitions:

Blood

A vital bodily fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to cells and transports waste products away.

Immediate And Irrational

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Limbic System

A complex system of nerves and networks in the brain, involved in emotions and drives, including fear, pleasure, and anger.

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Chemicals released in the body in response to stress, such as cortisol and adrenaline, that prepare the body to act in a fight-or-flight scenario.