four times the quantity thirty-two minus two end quantity plus twelve divided by four times three 2.The first step when simplifying any expression is parentheses. However, in the following expression, the... show more 1.Simplify the following expression according to the order of operations.
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.
A Dr. William Salt, MD, Gastroenterology, answered. The parasympathetic branch of the autonomic nervous system (ANS) has nerve fibers that originate in the cranial (top) and sacral (bottom) segments of the spinal cord. The parasympathetic branch calms the body, which is the precise opposite of the sympathetic branch. The parasympathetic system promotes routine activities, such as digesting your food. It slows the heart rate, whereas the sympathetic system speeds it up. It sends blood to the digestive tract, while the sympathetic system sends it to the muscles. The parasympathetic nervous system secretes the neurochemical acetylcholine, which is the key leading to relaxation.