4. Yachatz (Breaking the Matzah) - There is always a plate of three matzot (plural of matzah) on the table during a seder. (These matzot are part of the ritual meal-there are other matzot elsewhere to feed the seder guests.) At this point the seder leader takes a piece from the middle of the plate and breaks it in half.The smaller piece is put back between the remaining two matzot.These matzot are part of the ritual meal-there are other matzot elsewhere to feed the seder guests.) At this point the seder leader takes a piece from the middle of the plate and breaks it in half. The smaller piece is put back between the remaining two matzot.
Nerve fibres of the parasympathetic nervous system arise from the central nervous system. Specific nerves include several cranial nerves, specifically the oculomotor nerve, facial nerve, glossopharyngeal nerve, and vagus nerve. Three spinal nerves in the sacrum (S2-4) also act as parasympathetic nerves.he vagus nerve is an unusual cranial parasympathetic in that it doesn't join the trigeminal nerve in order to get to its target tissues. Another peculiarity is that the vagus has an autonomic ganglion associated with it at approximately the level of C1 vertebra. The vagus gives no parasympathetic to the cranium.
The vagus nerve innervates the larynx, the pharynx, the upper part of the oesophagus, the part of the external hearing apparatus, the heart, the lungs, the stomach, the intestine and even several muscles. The accessory nerve, known as the eleventh cranial nerve, is a motor nerve, that regulates the muscular activity.he vagus nerve, or tenth cranial nerve, is the longest and most important nerve of the parasympathetic nervous system (it belongs to the neurovegetative system) as it regulates the functions of almost all of the internal organs.