Pregnant women suffering from the common cold can be reassured about the safety of short-term use of OTC cold medications. These drugs, however, should not be used indiscriminately or for extended periods of time. In addition, use should be confined to only those products that are appropriate for the symptoms.
Acetylcholine (ACh) is a common neurotransmitter secreted by a variety of neurons. It binds to two different receptors-Ionotropic (fast) nicotinic receptors and metabotropic (slow) muscarinic receptors. 1  role in central nervous system. 2  role in peripheral nervous system. 3  receptors and signaling. 4  agonists and antagonists.
Nerve endings of the autonomic nervous system that secrete the neurotransmitter epinepherine and norepinephrine. Part of the adrenal gland that is directly controlled by the sympathetic nervous system neurons. The cells respond to the stimulation by releasing epinephrine (80%) and norepinephrine (20%). located in terminal ganglia. small ganglia located right next to target tissue. short unmyelinated axons, release ach, cholinergic fibers.