sympathetic trunk

(redirected from ganglionic chain)
Also found in: Wikipedia.

trunk

 [trungk]
1. the part of the body to which the head and limbs are attached; called also torso.
2. a larger structure, such as a vessel or nerve, from which smaller divisions or branches arise, or that is created by their union. adj., adj trun´cal.
brachiocephalic trunk truncus brachiocephalicus.
celiac trunk the arterial trunk arising from the abdominal aorta and giving origin to the left gastric, common hepatic, and splenic arteries.
encephalic trunk brainstem.
lumbosacral trunk a trunk formed by union of the lower part of ventral branch of the fourth lumbar nerve with the ventral branch of the fifth lumbar nerve.
lymphatic t's the lymphatic vessels (right or left lumbar, intestinal, right or left bronchomediastinal, right or left subclavian, and right or left jugular trunks) that drain lymph from various regions of the body into the right lymphatic or thoracic duct.
pulmonary trunk a vessel arising from the conus arteriosus of the right ventricle and bifurcating into the right and left pulmonary arteries.
sympathetic trunk two long ganglionated nerve strands, one on each side of the vertebral column, extending from the base of the skull to the coccyx.

sym·pa·thet·ic trunk

[TA]
one of the two long ganglionated nerve strands alongside the vertebral column that extend from the base of the skull to the coccyx; they are connected to each spinal nerve by gray rami and receive fibers from the spinal cord through white rami connecting with the thoracic and upper lumbar spinal nerves.

sympathetic trunk

one of a pair of chains of ganglia extending along the side of the vertebral column from the base of the skull to the coccyx. Each trunk is part of the sympathetic nervous system and consists of a series of ganglia connected by various types of fibers. Each sympathetic trunk distributes branches with postganglionic fibers to the autonomic plexuses, the cranial nerves, the individual organs, the nerves accompanying arteries, and the spinal nerves.
enlarge picture
Sympathetic trunk

sym·pa·thet·ic trunk

(sim'pă-thet'ik trŭngk) [TA]
One of the two long, ganglionated nerve strands alongside the vertebral column that extend from the base of the skull to the coccyx; they are connected to each spinal nerve by gray rami and receive fibers from the spinal cord through white rami connecting with the thoracic and upper lumbar spinal nerves.
Synonym(s): truncus sympathicus [TA] .

sympathetic

pertaining to the sympathetic nervous system.

acute sympathetic blockade
trauma to the cervical spinal cord may be associated with bradycardia and hypotension.
sympathetic chain
the sympathetic trunk whose ganglia suggest a chain of beads.
sympathetic cholinergic vasodilator fibers
a system of efferent dilator nerves distributed only to skeletal muscles; the existence of the system has been verified only in cats and dogs; in other species where it is not present vasodilation is achieved only by relaxation of vasoconstrictor tone.
sympathetic nerves
1. see sympathetic trunk (below).
2. any nerve of the sympathetic nervous system.
sympathetic nervous system
the part of the autonomic nervous system whose preganglionic fibers arise from cell bodies in the thoracic and lumbar segments of the spinal cord; postganglionic fibers are distributed to the heart, smooth muscle, and glands of the entire body.
sympathetic outflow
the preganglionic fibers from the nerve cells in the thoracolumbar cord.
sympathetic regurgitation
see neurotic regurgitation.
sympathetic trunk
two long ganglionated nerve strands, one on each side of the vertebral column, extending from the base of the skull to the coccyx.
sympathetic trunk ganglia
ganglia situated segmentally along the paired sympathetic trunks beside the vertebral bodies.

trunk

1. the main part, as the part of the body to which the head and limbs are attached, or a larger structure (e.g. vessel or nerve) from which smaller divisions or branches arise, or which is created by their union.
2. the extended nose of the elephant, containing many muscles giving it extraordinary strength and mobility. Anatomically it includes the nose and upper lip. There is a single finger-like papilla on the dorsal part of the tip in the Asian elephant and two papillae on the African elephant.

bicarotid trunk
a short artery which is the origin of the common carotid arteries in ungulates.
brachiocephalic trunk
see Table 9.
celiac trunk
the arterial trunk arising from the abdominal aorta and giving origin to the left gastric, common hepatic, and splenic arteries; see Table 9.
costocervical trunk
a branch of the subclavian artery; see Table 9.
lumbar lymph trunk
a plexus of lymph vessels on the roof of the abdomen; drain into the cisterna chyli.
lumbosacral trunk
a nerve trunk formed by union of the ventral branches of the lumbar and sacral nerves; see also Table 9.
pudendoepigastric trunk
see Table 9.
pulmonary trunk
a vessel arising from the conus arteriosus of the right ventricle and bifurcating into the right and left pulmonary arteries; see also Table 9.
sympathetic trunk
see sympathetic trunk.
vagal trunk
see dorsal, ventral vagal trunks in Table 14.
References in periodicals archive ?
Ann Arbor classification of lymphomas (14) Stage I Involves 1 ganglionic chain (I) or localized involvement of 1 extralymphatic organ (IE) Stage II Involves 2 or more ganglionic chains ipsilateral to the diaphragm (II) or involves 1 extralymphatic site and 1 or more ganglionic chains ipsilateral to the diaphragm (IIE) Stage III Involves various ganglionic chains on both sides of the diaphragm (III), possibly associated with extralymphatic sites (IIIE), the spleen (IIIS), or both (IIIES) Stage IV Involves various extralymphatic sites with or without ganglionic involvement or 1 isolated site associated with distal ganglions Type A Without systemic symptoms Type B With systemic symptoms Table 2.