The 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.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/APAP and Pregnancy Category C. The acetaminophen component of hydrocodone/APAP is usually considered safe for pregnant women (see Tylenol and Pregnancy) . However, the hydrocodone component may not be safe.When given to pregnant hamsters, a single dose of hydrocodone increased the risk of birth defects, including cranial defects.Limited human studies also indicate that hydrocodone may increase the risk of similar birth defects in humans.ydrocodone/APAP and Pregnancy Category C. The acetaminophen component of hydrocodone/APAP is usually considered safe for pregnant women (see Tylenol and Pregnancy) . However, the hydrocodone component may not be safe.
No anti-anxiety medication is completely safe during pregnancy, but some are much safer than others. The least safe anti-anxiety medications during pregnancy are benzodiazepines, such as Xanax and Valium. They inhibit brain function by enhancing the potency of the neurotransmitter GABA. According to a study published in the November 2007 issue of Pharmacoepidemiology and Drug Safety, benzodiazepines increase the risk of low birth weight, preterm birth and congenital malformations.