Marissa has been diagnosed with major depressive disorder. the amounts of and norepinephrine in her brain are likely to be depleted when she is depressed.

I believe the answer is: Dopamine

Dopamine tend to be released everytime we do a rewarding behaviors that activate the pleasure center in our brain.

When there the amount of dopamine is too little, we can conclude that the person is experiencing little to no pleasure in his/her life, which might contribute to the depression.

Marissa has been diagnosed with major depressive disorder. the amounts of serotonin and norepinephrine in her brain are likely to be depleted when she is depressed.

Explanation:

Depression is a mood disorder. A person with a depressive disorder finds themselves in a constant negative mood state. People diagnosed with depressive disorder have various symptoms it includes low self-esteem, feeling inferior, inadequate, incompetent etc.

The daily routine becomes cumbersome like eating, taking a bath, putting on clothes. There are somatic symptoms like loss of appetite and weight loss, sleep disturbances.

Neurotransmitters like serotonin, norepinephrine and dopamine play a crucial role in brain chemistry because they regulate the feel good hormones and the pleasure/reward compartments of the brain.

A person with depression has depleted serotonin and norepinephrine, which is why medications that mimic the structure of these neurotransmitters when taken alleviate some percentage of the depressive disorder.

2b2t

explanation:

2b2t

answer; not notated (at least, not in the traditional sense) and includes many improvised sections and solos;