The parasympathetic and sympathetic components of the autonomic nervous system (ANS) differ in their structure and in their function, but the two systems have some important features in common.he cell bodies of the presynaptic neurons of both the parasympathetic and sympathetic systems are located within the central nervous system. These presynaptic autonomic neurons synapse only with postsynaptic autonomic neurons.
Hydrocodone itself does not cause possible liver damage, but the actual acetaminophen in the pill is what can cause liver damage in high doses. Typically one must consume more then 8,000 mg in a 24 hour period consistently over a period of time to cause damage.cetaminophen is processed by the liver and it takes about 4 hours for the liver to break it down. Taking more then the recommended dosage can cause the liver hardship. Granted going over a few times won't necessarily cause permanent damage, but consistent use may.
Medical uses[edit] Hydrocodone is used to treat moderate to severe pain and as an antitussive to treat cough. In one study comparing the potency of hydrocodone to that of oxycodone, it was found that it took 50% more hydrocodone to achieve the same degree of miosis (pupillary contraction). The investigators interpreted this to mean that oxycodone is about 50% more potent than hydrocodone.