The major components of the lymphatic system are lymphatic vessels, lymph, lymph nodes, and some other lymphatic organs.
Lymphatic vessels carry lymph, a colorless liquid, throughout the body. Along lymph vessels are small bean-shaped glandular nodules called lymph nodes.
Other lymphatic organs are:
- Tonsil: clusters of lymphatic tissues just under the mucous membranes that line the nose, mouth, and pharynx.
- Spleen: it is similar to a lymph node in shape and structure but it is much larger.
- Thymus: a soft organ with two lobes that is located anterior to the ascending aorta and posterior to the sternum.
- Peyer patch: lymphoid tissue on the visceral surface of the small intestine.