Cocaine Appears to Affect the Brain Through the Activation of Neurons

question 153

Multiple Choice

Cocaine appears to affect the brain through the activation of neurons that rely on ________ for the transmission of nerve signals.

• A)serotonin
• B)epinephrine
• C)dopamine
• D)thyroxin

---

Definitions:

Blood-Brain Barrier

Specialized membranes that surround the blood vessels within the brain and filter harmful chemicals out of the brain’s blood supply.

Defense System

Mechanisms or strategies employed by individuals or systems to protect against threats, criticism, or psychological harm, often unconsciously in the form of psychological defenses.

Hyperpolarized

describes a state where a neuron's membrane potential becomes more negative than its resting potential, making it less likely to fire an action potential.

Transmitter Substances

Chemicals released by nerve cells to transmit signals across a synapse to another nerve, muscle, or gland cell.