Physiology and biochemistry in modern medicine . llintestine itself the cells of these motor neurons are those of Auerbachsplexus found between the two muscular coats. In the diverticula, whichinclude the lungs and the gall bladder, the nerve cells to which thevagus fibers run are also situated peripherally. The sacral outflow occurs through the second and third sacral nerves,the fibers joining to form a single nerve (the pelvic nerve or nervuserigens) on each side. This passes directly to the bladder, where itconnects with a plexus, often called the hypogastric, which extends overthe bladder
Physiology and biochemistry in modern medicine . llintestine itself the cells of these motor neurons are those of Auerbachsplexus found between the two muscular coats. In the diverticula, whichinclude the lungs and the gall bladder, the nerve cells to which thevagus fibers run are also situated peripherally. The sacral outflow occurs through the second and third sacral nerves,the fibers joining to form a single nerve (the pelvic nerve or nervuserigens) on each side. This passes directly to the bladder, where itconnects with a plexus, often called the hypogastric, which extends overthe bladder and neighboring portion of the rectum. The branches runto connect either with the nerve cells of the ganglia of the plexus itself,or with nerve cells situated on the walls of the large intestine and blad-der. The pelvic nerve makes its connections with the periphery in the *Its action is always the same as that which is produced hy stimulation of the sympathetic nervesupply, whether this effect is one ot stimulation or inhibition. iTj^ = Key — PreGangiionic SympatheticPostGanglionic SympatheticPre Ganglionic Bulbo-Sacral (Parasympathetic)PostGanglionicBulbo-Sacral ArmPost9«n9J Head &__ Neck (Pregang.) SympatheticGanglia Thoracic6planctinicnerve Armf(Pregang) Coeliac Plexus & Leg (Pregang.} , >Abdominal Viscera (Pregang.) LumbarSplanchnic nerve ;JL — Inf. yASp. visceral nerve Fig 232—Diagram showing the main parts of the autonomic nervous system to be used alongwith Fig. 233. For the sake of clarity several of the preganglionic fibers of the sympatheticautonomics are omitted, but the position of their egress from the cord is indicated in the sidenotes. The diagram shows clearly the distribution of the bulbosacral autonomic system by wajof the vagus and the first, second and third sacral nerves. THE AUTONOMIC NERVOUS SYSTEM 883 same manner as the vagus. Taken together these two nerves supply themusculature of the gastrointesti
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