jugular veins


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

jugular

 [jug´u-lar]
1. cervical (def. 1).
2. pertaining to a jugular vein.
3. a jugular vein.
jugular veins large veins that return blood to the heart from the head and neck; each side of the neck has two jugular veins, external and internal. The external jugular carries blood from the face, neck, and scalp and has two branches, posterior and anterior. The internal jugular vein receives blood from the brain, the deeper tissues of the neck and the interior of the skull. The external jugular vein empties into the subclavian vein, and the internal jugular vein joins it to form the brachiocephalic vein, which carries the blood to the superior vena cava, where it continues to the heart. If one of these veins is severed, rapid loss of blood will result and air may enter the circulatory system. In such a case, a compress should be applied to the wound with pressure. See anatomic Table of Veins in the Appendices and see color plates.
Location of the internal and external jugular veins. From Polaski and Tatro, 1996.

an·te·ri·or jug·u·lar vein

[TA]
vein that arises below the chin from veins draining the lower lip and mental region, descends in the anterior portion of the neck, coursing either superficial or deep to the investing cervical fascia to terminate in the external jugular vein at the lateral border of the scalenus anterior muscle.
Synonym(s): vena jugularis anterior [TA]

jugular veins

The six main veins-the right and left internal and external jugulars and the front anterior jugulars-that run down the front and side of the neck, carrying blood back to the heart from the head. The internal jugulars are very large trunks containing blood at low pressure. The external and anterior jugulars are much smaller.

jugular

1. pertaining to the neck.
2. one of the jugular veins.

jugular furrow
the groove on each side of the neck in which the jugular vein can be located. Lies dorsal to the trachea.
jugular inlet
the depression at the base of the neck where the jugular vein passes medial to the first rib. Examination of the inlet is valuable because it is possible to determine the activity and efficiency of the right atrium and the patency of the jugular vein by observing the movements of the vein's wall.
jugular vein distention
see jugular vein engorgement (below).
Enlarge picture
External jugular vein in the dog. By permission from McCurnin D, Poffenbarger EM, Small Animal Physical Diagnosis and Clinical Procedures, Saunders, 1991
jugular vein engorgement
is a clinical indicator of obstruction to the return of blood to the right atrium, e.g. because of congestive heart failure or space-occupying lesion in the anterior thorax.
jugular veins
two pairs of large veins, internal and external, that return blood to the heart from the head and neck.
References in periodicals archive ?
Percutaneous right internal jugular vein cannulation can be made by landmark- or ultrasound-guided technique.
In a recent study, by the means of repeated countered measure of the elliptical internal jugular vein, a significant risk of flow rate underestimation with the assumption of a cylindrical venous shape has been demonstrated,.
5 Factors including cardiac pump function, the jugular venous wall tone, compliance and transmural pressure of IJV, and autonomic tone may affect the CSA of the jugular vein.
External jugular vein aneurysm: A source of thrombotic complications.
Effects of trendelenburg position and positive intrathoracic pressure on internal jugular vein cross-sectional area in anesthetized children.
Duplication of the internal jugular vein (IJV) is very rare.
In a study of the dissection of 100 external jugular veins in 50 cadavers, the mode of termination of external jugular vein is defined; forty-three subjects presented a symmetric mechanism.
The internal jugular vein (IJV) is a delicate vessel that is well protected by deep fascia.
Contrast-enhanced computed tomography (CT) of the neck (figure 2) and chest (figure 3) detected thrombosis of the right jugular, distal right subclavian, right brachiocephalic, and left jugular veins.
Facial vein draining into external jugular vein in humans: its variations, phylogenetic retention and clinical relevance.
Fully automated common carotid artery and internal jugular vein identification and tracking using B-mode ultrasound.