... is caused by an imbalance of the neurotransmitter serotonin, dopamine and norepinephreine. Neurotransmitters are chemical released by the nerves that deliver messages across a synapsis to another nerve. They exist in the spinal cord, peripheral nerves, certain glands and throughout the brain. The neurotransmitter's serotonin is linked to sleep, appetite, pain suppression and emotions. Second dopamine involves voluntary ... movement. Moreover the neurotransmitter norepinephrine is involved in memory, wakefulness, and increases the heart rate. Depression is associated with the hormone Cori...

• Word Count: 423
• Approx Pages: 2
• Grade Level: Undergraduate

... imbalance in the four "humors" that influence temperament. The Ancient Greeks developed the concepts of "essentialism", involving the four humors. Essentialism was the belief that every living organism alive contained certain mixtures of the four elements: earth, air, fire and water. These four elements were called humors. The humors consisted of Black Bile (earth), Phlegm (water), Yellow Bile (air), and Blood (fire ... viewer an intellectual response to depression even without understanding the specifics of the engraving. The dark, lonely figure slumped in a cold, darkly shadowed lands...

• Word Count: 2472
• Approx Pages: 10
• Has Bibliography
• Grade Level: Undergraduate

... world" (Sergant 5). Depression is a medical condition that is all too often thought of as a defect in character. Depression will affect one out of every five people in the US. Although depression is often thought of as the common cold of mental illness, the disease is actually quite complex; it has both physiological and psychological causes, and can take many years to ... is needed to rule out disorders like thyroid disease, anemia or a viral infection that could produce similar symptoms as a depressive disorder. The lab tests include a thyroid screening and blood count. The neurologica...

• Word Count: 4134
• Approx Pages: 17
• Has Bibliography
• Grade Level: Undergraduate

Major depressive disorder or MDD, clinical depression which is a condition that has been known as the "common cold" of psychological disorders - an phrase that effectively describes its pervasiveness but not its seriousness. It is described to be an episodic disorder, meaning, it occurs in episodes that come and go. Major Depressive Disorder is most commonly influence ages 18 and 45, however, can ... be called the "command center". This controls all the basic functions of our movements, our bodies, as well as our emotions and feelings. Therefore, depression is looked at several aspects in th...

• Word Count: 1391
• Approx Pages: 6
• Has Bibliography
• Grade Level: Undergraduate