Ko te whātuinga o ngā iaia ririki me ngā tīpona, e kawea ai tētahi wē āhua kōtea nei te tae, ki ngā wāhanga katoa o te tinana. Ka takea taua wē i te toto o te tangata, ā, ka kīia ko te waitinana. Kei roto i te waitinana ngā pūtau hei patu i ngā moroiti tahumaero. Ka horoia te waitinana ki roto i ētahi repe e kīia ana he tīpona waitinana, ā, ka whakahokia anō ki te toto.
The network of tiny vessels and nodes which carry a pale fluid to all parts of the body. The fluid originates from the bloodstream and is called lymph. Lymph contains germ-fighting cells. Lymph is cleansed in glands called lymph nodes and is returned to the blood stream.