External jugular vein

External jugular vein

Infobox Vein
Name = External jugular vein
Latin = vena jugularis externa
GraySubject = 168
GrayPage = 646


Caption = Veins of the head and neck. (External jugular visible at center.)


Caption2 = Veins
DrainsFrom = cranium, face
Source = posterior facial vein, posterior auricular vein, anterior jugular vein
DrainsTo = subclavian vein
Artery =
MeshName = Jugular+Veins
MeshNumber = A07.231.908.498
DorlandsPre = v_05
DorlandsSuf = 12850751
The external jugular vein receives the greater part of the blood from the exterior of the cranium and the deep parts of the face, being formed by the junction of the posterior division of the posterior facial with the posterior auricular vein.

Path

It commences in the substance of the parotid gland, on a level with the angle of the mandible, and runs perpendicularly down the neck, in the direction of a line drawn from the angle of the mandible to the middle of the clavicle at the posterior border of the Sternocleidomastoideus.

In its course it crosses the Sternocleidomastoideus obliquely , and in the subclavian triangle perforates the deep fascia, and ends in the subclavian vein, lateral to or in front of the Scalenus anterior.

It is separated from the Sternocleidomastoideus by the investing layer of the deep cervical fascia, and is covered by the Platysma, the superficial fascia, and the integument; it crosses the cutaneous cervical nerve, and its upper half runs parallel with the great auricular nerve.

The external jugular vein varies in size, bearing an inverse proportion to the other veins of the neck, it is occasionally double.

Valves

It is provided with two pairs of valves, the lower pair being placed at its entrance into the subclavian vein, the upper in most cases about 4 cm. above the clavicle. The portion of vein between the two sets of valves is often dilated, and is termed the sinus.

These valves do not prevent the regurgitation of the blood, or the passage of injection from below upward.

Tributaries

This vein receives the occipital occasionally, the posterior external jugular, and, near its termination, the transverse cervical, transverse scapular, and anterior jugular veins; in the substance of the parotid, a large branch of communication from the internal jugular joins it.


=Additional

ee also

* jugular vein

External links

* (NormanAnatomyFig|parotid2)


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Look at other dictionaries:

  • External jugular vein — The more superficial of the two jugular veins situated on each side of the neck. The other is the internal jugular vein. They drain blood from the head, brain, face and neck and convey it toward the heart. The external jugular vein collects most… …   Medical dictionary

  • external jugular vein — noun formed by the junction of the posterior auricular and the retromandibular veins; empties into the subclavian vein • Hypernyms: ↑jugular vein, ↑vena jugularis, ↑jugular * * * noun see jugular vein …   Useful english dictionary

  • external jugular vein. — See under jugular (def. 1b). * * * …   Universalium

  • external jugular vein. — See under jugular (def. 1b) …   Useful english dictionary

  • Posterior external jugular vein — Infobox Vein Name = Posterior external jugular vein Latin = v. jugularis posterior GraySubject = 168 GrayPage = 647 Caption = The vertebral vein. (Posterior external jugular labeled at center left.) Caption2 = DrainsFrom = DrainsTo = Artery =… …   Wikipedia

  • Jugular vein — The jugular veins are in the neck and drain blood from the head, brain, face and neck and convey it toward the heart. The external jugular vein collects most of the blood from the outside of the skull and the deep parts of the face. It lies… …   Medical dictionary

  • Vein, external jugular — The more superficial of the two jugular veins situated on each side of the neck. The other is the internal jugular vein. They drain blood from the head, brain, face and neck and convey it toward the heart. The external jugular vein collects most… …   Medical dictionary

  • Jugular vein, external — The more superficial of the two jugular veins in the neck that drain blood from the head, brain, face and neck and convey it toward the heart. The external jugular vein collects most of the blood from the outside of the skull and the deep parts… …   Medical dictionary

  • Jugular vein, internal — The deeper of the two jugular veins in the neck that drain blood from the head, brain, face and neck and convey it toward the heart. The internal jugular vein collects blood from the brain, the outside of the face and the neck. It runs down the… …   Medical dictionary

  • jugular vein — noun veins in the neck that return blood from the head • Syn: ↑vena jugularis, ↑jugular • Derivationally related forms: ↑jugular • Hypernyms: ↑vein, ↑vena, ↑venous blood vessel …   Useful english dictionary

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