Editing Thymus (section)

===Blood and nerve supply===
The [[Artery|arteries]] supplying the thymus are branches of the [[internal thoracic artery|internal thoracic]], and [[inferior thyroid artery|inferior thyroid arteries]], with branches from the [[superior thyroid artery]] sometimes seen.<ref name="Grays2016" /> The branches reach the thymus and travel with the septa of the capsule into the area between the cortex and medulla, where they enter the thymus itself; or alternatively directly enter the capsule.<ref name="Grays2016" />

The [[vein]]s of the thymus, the [[thymic veins]], end in the [[left brachiocephalic vein]], [[internal thoracic vein]], and in the [[inferior thyroid vein]]s.<ref name="Grays2016" /> Sometimes the veins end directly in the superior vena cava.<ref name="Grays2016" />

[[Lymphatic vessel]]s travel only away from the thymus, accompanying the arteries and veins. These drain into the brachiocephalic, tracheobronchial and parasternal [[lymph node]]s.<ref name="Grays2016" />

The [[nerve]]s supplying the thymus arise from the [[vagus nerve]] and the cervical [[sympathetic chain]].<ref name="Grays2016" /> Branches from the [[phrenic nerve]]s reach the capsule of the thymus, but do not enter into the thymus itself.<ref name="Grays2016" />