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.
Hydrocodone also has less severe side effects, such as itching and nausea, than codeine. Hydrocodone and codeine are NOT the same chemical compound; they're two different drugs. <br /><br /> Codeine is the 3-methylether of morphine. It's almost inactive on it's own, and needs to be converted into morphine via the enzyme CYP2D6 in the liver to cause opioid effects, hence it's a prodrug.