In swallowing, one portion is volunatary and one part is involuntary. â¢ Buccal phase o Voluntary contraction of the tongue o Step 1 in figure â¢ Pharyngeal-esophageal phase o Involuntary o Control center in the medulla and lower pon o Step 2-5 in figure.
Considerations. Serotonin is a mood regulator that occurs naturally in the body. When serotonin levels are chemically altered, as they are with the use of diet supplements such as Phentermine, a chemical imbalance occurs that may lead to feelings of anxiety or depression.
While these drugs may be helpful to those who are unable to achieve weight loss through diet and exercise alone, there are dangers that must be considered in the use of prescription diet pills. Drugs.com states that phentermine, sold under the brand name Adipex, is a stimulant that behaves similarly to amphetamines.