The jugular vein (Fig. 62, No. _B_, 3) passes along the side of the neck and lies near the trachea, the esophagus, and the pneumogastric nerve. Near the base of the skull the two jugular veins, the right and the left, are connected by a transverse vein. By this anastomosis part of the blood from the left jugular vein is sent into the right. Therefore the right jugular vein is larger than the left. The jugular veins collect the blood from the tongue region, the thyroid, the esophagus, the trachea, the crop, and other structures along its course through the cervical region. The =vertebral veins= are divided into the anterior and the posterior, or the inferior and the superior. The _anterior vertebral vein_ is located in the cervical region and collects the blood from the brain and the inner part of the head. The vertebral vein passes along the dorsal side of the spinal cord. BRANCHES OF THE VENÆ CAVÆ ANTERIORES ( Venæ linguales ( Vena occipitalis lateralis ( Vena occipito-collores ( Vena ascendenes lateralis ( Venæ colli cutineæ ( Venæ esophagealeæ ( Venæ tracheales ( Vena ( Vena subscapularis ( jugularis ( Venæ glandularum thyroidearum ( ( ( Vena occipitalis ( Sinus foraminis ( ( ( interna ( occipitalis ( ( Vena ( ( ( vertebralis ( Vena vertebralis posterior ( Vena intercostales Vena cava ( ( ( Vena vertebralis anterior anterior ( ( Vena vertebralis ( Vena vertebralis lateralis dorsalis ( Venæ intercostales ( ( Venæ coronariæ ( Vena subclavicularis ( Vena thoracica interna ( Vena intercostales ( Vena pharyngea superior ( Vena muscularis depressoris mandibularis Vena facialis ( Vena muscularis colli anterior superioris communis ( Vena lingualis ( Vena sublingualis et sphenoidea The _posterior vertebral vein_ is located in the dorsal region, passes backward and receives the blood from the dorsal neck region and from the intercostal veins and from the vertebral segments and adjacent regions. The anterior and the posterior vertebral vein form one trunk, the vertebral vein, and this trunk empties into the vena jugularis just before the subclavian and the jugular unite. The =subclavian vein= collects the blood from the anterior extremities. It unites with the vena jugularis of the same side. The left vena cava receives the coronary veins from the heart. THE VEINS OF THE HEAD BRANCHES OF THE VENA FACIALIS INTERNA