Lymphatic System Vocabulary: Immunity, Organs, and Vessels

Active immunity

Protection from a specific disease by exposure or contact from the disease.

Immunity

Ability to resist an infection.

Lacteals

Specialized lymphatic capillary

Lingual Tonsils

Located on the back of the tongue.

Lymph

Thin, watery fluid composed of intercellular fluid.

Lymph nodes

also called lymph glands, located all over the body

Lymphatic capillaries

Small open-ended lymph vessels.

Lymphatic vessels

Thin-walled vessels

Palatine Tonsils

Located on each side of the soft palate.

Passive Immunity

Acquired by receiving antibodies

Pharyngeal Tonsils

Located in the nasopharynx (upper part of throat).

Right Lymphatic duct

Short tube that receives all purified lymph

Spleen

Largest organ of the lymphatic system

Thoracic duct

Large tube that drains the lymph from the rest of the body.

Thymus

Organ produces antibodies during childhood

Tonsils

Masses of lymphatic tissue

Antibodies

Protein-produced in the body to destroy pathogens