Neurotransmitters are chemical messengers that coordinate the transmission of signals from one nerve cell (neuron) to the next.eurotransmitters are chemical messengers that coordinate the transmission of signals from one nerve cell (neuron) to the next.
Soldiers in the secondary zone may be boarded with 16 months time-in-service and four months time-in-grade as of the first day of the board month. The time-in-service requirement for attaining eligibility for promotion to SSG is 84 months Active Federal Service for the primary zone and 48 months for the secondary zone.
A time capnogram can be divided into inspiratory (phase 0) and expiratory segments. The expiratory segment, similar to a single breath nitrogen curve or single breath CO2 curve, is divided into phases I, II and III, and occasionally, phase IV, which represents the terminal rise in CO2 concentration. The angle between phase II and phase III is the alpha angle.