Superficial veins

Thyroid Factor

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The arrangement of the superficial veins of the head and neck are somewhat variable but the usual plan is as follows (Fig. 216):

The superficial temporal and maxillary veins join to form the retromandibular vein. This branches while traversing the parotid gland. Its posterior division, together with the posterior auricular vein, form the external jugular vein, whereas the anterior division joins the facial vein to form the common facial vein which opens into the internal jugular vein.

The external jugular vein crosses the sternocleidomastoid in the superficial fascia, traverses the roof of the posterior triangle then plunges through the deep fascia 1in (2.5cm) above the clavicle to enter the subclavian vein. You can see it in your own neck in the mirror when you perform a Valsava manoeuvre. Not rarely it is double.

The anterior jugular vein runs down one on either side of the midline of the neck, crossing the thyroid isthmus. Just above the sternum it communi-

Anterior Jugular Veins
Fig. 216 The usual arrangement of the veins in the neck.

Internal jugular

Inferior thyroid

Vertebral

Right brachiocephalic

Thymic

Entrance of azygos vein

Superior vena cava

Thoracic Duct

Thoracic duct

External jugular

Subclavian

Left brachiocephalic

Left superior intercostal

Internal thoracic

Fig. 217 The great veins of the neck and their tributaries.

Inferior thyroid

Vertebral

Thoracic duct

External jugular

Subclavian

Right brachiocephalic

Left brachiocephalic

Thymic

Left superior intercostal

Entrance of azygos vein

Superior vena cava

Internal thoracic

Fig. 217 The great veins of the neck and their tributaries.

cates with its fellow then passes outwards, deep to the sternocleidomastoid, to enter the external jugular vein.

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Pregnancy Diet Plan

The first trimester is very important for the mother and the baby. For most women it is common to find out about their pregnancy after they have missed their menstrual cycle. Since, not all women note their menstrual cycle and dates of intercourse, it may cause slight confusion about the exact date of conception. That is why most women find out that they are pregnant only after one month of pregnancy.

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  • Neil
    Where Are The Jugular Veins?
    8 years ago

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