An Interface Control Document (ICD) describes the relationship between system components in terms of data items and messages passed, protocols observed and timing and sequencing of events.se this template to: Describe the interface(s) to a system or subsystem. Describe the inputs and outputs of a single system, the interface between two systems, the interface protocol from the lowest physical elements to the highest logical levels.
In the most basic terms, the function of norepinephrine is to mobilize the brain and body for action. Norepinephrine release is lowest during sleep, rises during wakefulness, and reaches much higher levels during situations of stress or danger, in what has been called the fight-or-flight response.n the sympathetic nervous system norepinephrine is used as a neurotransmitter by sympathetic ganglia located near the spinal cord or in the abdomen, and is also released directly into the bloodstream by the adrenal glands.
Norepinephrine and Depression. Norepinephrine and Depression. Norepinephrine functions both a neurotransmitter and hormone in the body. It is classified as a catecholamine hormone which is significant in the body's fight or flee response.hese depression symptoms caused by low level norepinephrine may be treated. There are medications available to counter the effects of low level norepinephrine in the body and treat the depression symptoms associated with it.