Fig. 50-27. The lymphatic drainage of the head and neck. A, The superficial groups of cervical lymph nodes. The wide, shaded band indicates the "pericervical collar" of nodes. Each circle represents a group of nodes. The arrows show the direction of drainage. B, The deep cervical lymph nodes. The drawing at the lower right shows one of many patterns that may be found on the left side of the body. Click for high resolution image.