pulmonary plexus

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Related to pulmonary plexus: cardiac plexus, Esophageal plexus, pulmonary nerve

pul·mo·nar·y plex·us

(pul'mŏ-nar-ē plek'sŭs)
One of two autonomic plexuses, anterior and posterior, at the hilus of each lung, formed by cardiopulmonary splanchnic nerves of the sympathetic trunk and bronchial branches of the vagus nerve; from them various branches accompany the bronchi and arteries into the lung.

pulmonary plexus

An autonomic nerve plexus extending from the cardiac plexus into the lungs along the right and left pulmonary arteries. Parasympathetic axons come from the vagus nerves, and sympathetic axons from the sympathetic trunk. Axons from the pulmonary plexus follow the bronchi and the bronchial vessels and provide the autonomic innervation inside the lungs.
See also: plexus


pl. plexus, plexuses [L.] a network or tangle, chiefly of veins or nerves.

brachial plexus
see brachial plexus.
cardiac plexus
the plexus around the base of the heart, chiefly in the epicardium, formed by cardiac branches from the vagus nerves and the sympathetic trunks and ganglia, and made up of sympathetic, parasympathetic and visceral afferent fibers that innervate the heart.
carotid p's
nerve plexuses surrounding the common, external and internal carotid arteries.
celiac plexus
a plexus of autonomic fibers and sympathetic nerve ganglia which surround the origin of the celiac artery, and supply the abdominal viscera.
celiacomesenteric plexus
a plexus of autonomic nerve fibers and sympathetic ganglia around the origin of the celiac and cranial mesenteric arteries; called also solar plexus.
cervical plexus
a network of nerve fibers formed by the first four cervical nerves and supplying the structures in the region of the neck.
choroid plexus
infoldings of blood vessels of the pia mater covered by a thin coat of ependymal cells that form tufted projections into the third, fourth, and lateral ventricles of the brain; they secrete the cerebrospinal fluid.
coccygeal plexus
a nerve plexus formed by the ventral branches of the coccygeal and last sacral nerves.
coronary plexus
a venous plexus within the coronet of the hoof.
cutaneous p's
superficial, middle and deep, inter-communicating plexuses of blood vessels are identified as supplying blood to haired skin.
cystic plexus
a nerve plexus near the gallbladder.
dental plexus
either of two plexuses (inferior and superior) of nerve fibers, one from the inferior alveolar nerve, situated around the roots of the lower teeth, and the other from the superior alveolar nerve, situated around the roots of the upper teeth.
gonadal plexus
the collection of parasympathetic and sympathetic nerves to the gonads.
hoof plexus
plexus of veins draining the hoof region in the horse.
lumbar plexus
see lumbar plexus.
lumbosacral plexus
see lumbosacral plexus.
mesenteric plexus
parasympathetic and sympathetic nerve supply to the abdominal organs.
myenteric plexus
nerve plexus
a plexus composed of intermingled nerve fibers.
pampiniform plexus
1. a plexus of veins from the testis and the epididymis, constituting part of the spermatic cord.
2. a plexus of ovarian veins in the broad ligament of the uterus.
parametrial plexus
the venous plexus within the broad ligament providing venous drainage to the uterus and vagina.
plexus papilloma
see plexus papilloma.
pulmonary plexus
the array of autonomic nerves which supply the lungs.
renal plexus
autonomic nerve supply to the kidney.
sacral plexus
a plexus arising from the ventral branches of the last few lumbar and first few sacral spinal nerves.
solar plexus
see celiacomesenteric plexus (above).
tympanic plexus
a network of nerve fibers supplying the mucous lining of the tympanum and auditory tube.