AP PSYCHOLOGY

Detailed explanation-1: -Answer and Explanation: The best answer is C. They move in a random manner. Neurotransmitters are chemical messenger substances.

Detailed explanation-2: -Billions of neurotransmitter molecules constantly work to keep our brains functioning, managing everything from breathing to heartbeat to learning and concentration levels. They can also affect various psychological functions such as fear, mood, pleasure, and joy.

Detailed explanation-3: -Neurotransmitters are chemical messengers that your body can’t function without. Their job is to carry chemical signals (“messages”) from one neuron (nerve cell) to the next target cell. The next target cell can be another nerve cell, a muscle cell or a gland.

Detailed explanation-4: -Depression, anxiety and other mood disorders are thought to be directly related to imbalances with neurotransmitters. Some of the more common neurotransmitters that regulate mood are Serotonin, Dopamine, and Norepinephrine. Serotonin imbalance is one of the most common contributors to mood problems.