Table of Contents. 1  Introduction. 2  How potentized remedies work. 3  Breathing and circulation. 4  Asthma symptoms explained. 5  The digestive system. 6  The nervous system. 7  How alcohol affects the nervous system and liver. 8  How opiates act like a dam. 9  Inflammation and infection. 10  Fever. 11  The common cold. 12  Earache. 13  Hints and tips.
message transfer agent - MTA. Related Terms. Short for message transfer agent, MTA is the program responsible for receiving incoming emails and delivering the messages to individual users. The MTA transfers messages between computers. Hidden from the average user, the message transfer agent is responsible for routing messages to their proper destinations.
PTA is a subjective, behavioural measurement of hearing threshold, as it relies on patient response to pure tone stimuli. Therefore, PTA is used on adults and children old enough to cooperate with the test procedure.TA provides ear specific thresholds, and uses frequency specific pure tones to give place specific responses, so that the configuration of a hearing loss can be identified. As PTA uses both air and bone conduction audiometry, the type of loss can also be identified via the air-bone gap.