Every staff has special staff officers. This section addresses the specific duties of each special staff officer. The number of special staff officers and their responsibilities vary with authorizations, the desires of the commander, and the size of the command.
Definition (NCI). An extract made from the dried leaflets on the pods of Cassia angustifolia or Cassia acutifolia with cathartic activity. Dimeric glycosides in dried senna extract are converted to the active monoanthrones by bacterial action in the colon.
Photo Credit Design Pics/Design Pics/Getty Images. Serotonin and melatonin are both hormones that regulate various human functions such as sleep, appetite and mood. Serotonin, which is produced in the body, is known as a neurotransmitter; this means it is responsible for sending messages between nerve cells.hoto Credit Design Pics/Design Pics/Getty Images. Serotonin and melatonin are both hormones that regulate various human functions such as sleep, appetite and mood. Serotonin, which is produced in the body, is known as a neurotransmitter; this means it is responsible for sending messages between nerve cells.