(anatomy) A network of anastomosing or interwoven nerves, blood vessels, or lymphatic vessels. / An interwoven combination of parts or elements in a structure or system.

(anatomy) A complex network of nerves and ganglia, located within the abdomen behind the stomach.

(anatomy) A plexus of superficial tangential nerve fibers in the molecular layer of the cerebral cortex.

A plexus of nerves situated at the base of the heart that innervate the heart.

(anatomy) A network of nerves formed by the anterior rami of the cervical nerves C5–C8 and first thoracic nerve (T1).

obsolete typography of coeliac plexus

(neuroanatomy) A plexus formed by the anterior divisions of the four upper cervical nerves.

(neuroanatomy) A plexus formed by branches of the glossopharyngeal, vagus, and sympathetic nerves supplying the muscles and mucous membrane of the pharynx and adjoining parts.

(neuroanatomy) Synonym of internal carotid plexus.

(neuroanatomy) A nerve plexus of the middle ear that is formed by the tympanic nerve and two or three filaments from the carotid plexus, sends fibers to the mucous membranes of the middle ear, the eustachian tube, and the mastoid cells, and gives off the lesser petrosal nerve to the otic ganglion.