a collection of capillaries in the mucosa at the anterior part of the nasal septum. Nosebleeds frequently have their origin from this plexus. See epistaxis; Little’s area. [W. Kiesselbach (1839–1902), German laryngologist]
A large network of sympathetic nerves and ganglia situated in the abdomen behind the stomach, where it surrounds the coeliac artery. Branches of the VAGUS nerve – the most important part of the PARASYMPATHETIC NERVOUS SYSTEM – lead into the solar plexus, which in turn distributes branches to the stomach, intestines and several other abdominal organs. A severe blow in the solar plexus may cause temporary unconsciousness.... solar plexus
Broadly, the several neuron masses, ganglia, and nerve fiber plexus that lie in the walls of the intestinal tract, particularly the small intestine. They monitor and stimulate local muscle and glandular functions as well as blood supply, with little interface or control by the central nervous system or the autonomics. Each synapse away from the CNS gives greater autonomy, and these nerves only listen to God ... and food. This means the small intestine is relatively free of stress syndromes.... myenteric plexus