These nodes drain the posterior nasal cavity, oropharynx, hypopharynx, nasopharynx, and thyroid gland. They are split into Level IIA and IIB by the location of the spinal accessory nerve.

Level II lymph nodes are located along the upper third of the sternocleidomastoid muscle (SCM) and include the upper jugular group. These nodes drain the lower lip, mouth floor, tongue, sublingual and submandibular glands. Level I lymph nodes are located along the lower border of the mandible and include the submental and submandibular lymph nodes. These levels are numbered I to VI, from the most superficial (closest to the skin’s surface) to the deepest (closest to the spine). There are six levels of cervical nodes, each with their own anatomic demarcation. What Are The Cervical Lymph Nodes Levels? These neck node levels are the same as described above, but are mainly used by healthcare professionals, and will be listed here as well for completeness. You may also come across the location of cervical nodes being described as being at different levels. There are other groups of lymph nodes, such as axillary lymph nodes and inguinal lymph nodes, which are located in in the armpit and groin region respectively. These groups are located around large vessels in the neck, namely the internal jugular vein and the internal carotid artery and an important nerve – the spinal accessory nerve. Infection, usually by a virus, is the most common cause of swollen lymph nodes other causes of swollen cervical lymph nodes include bacterial infection and cancer.Ĭervical lymph nodes specifically refer to lymph nodes in the region of the head and neck, and are divided into two main groups, the superficial cervical lymph nodes located just beneath the skin, and the deep cervical lymph nodes located deep within the neck. Normally, lymph nodes cannot be felt unless they are swollen. They also work by trapping bacteria, viruses, and cancer cells. These nodes help fight infection by producing special white blood cells. They are part of the body’s immune system. Lymph nodes are scattered throughout the body. These nodes are located in the neck and are responsible for filtering the lymphatic fluid, also known as lymph, that flows through them. Cervical lymph nodes are a part of the lymphatic system, a network of tissues and organs that help fight infections and diseases.

Enlarged lymph node in back of neck