The respiratory system takes in air starting from your nose and mouth, then sends it through a tube in your throat called the trachea, and then into your lungs. The trachea connects to the lungs by splitting into two tubes called bronchiole tubes, which eventually split into smaller and smaller tubes.
Causes and contributors of low Serotonin Levels and Deficiency. Serotonin is synthesized in the brain and body from tryptophan an amino acid. Tryptophan converts into 5- hydroxytryptophan then into serotonin (5-hydroxytryptamine), if all of the co-factors are present.atural Serotonin is involved in the regulation of several processes within the brain, including, depression, mood, emotions, aggression, sleep, appetite, anxiety, memory and perceptions. Serotonin regulates these processes through pathways that innervate (connect to) different brain regions.
Serotonin is a neurotransmitter found in your gastrointestinal tract, platelets and central nervous system. Tryptophan is a building block of serotonin as well as of melatonin. Tryptophan is an essential amino acid, meaning that you cannot synthesize it in your body, but must obtain it from dietary sources.In your central nervous system, serotonin helps to regulate mood, sleep and appetite.our pineal gland produces melatonin, and your intestinal cells and brainâs nervous center produces serotonin. Both melatonin and serotonin play several roles in human behavior and cognition. Serotonin syndrome is a medical condition defined as excess levels of serotonin in your body.