AP BIOLOGY

Detailed explanation-1: -If cancer cells start replicating, they don’t behave like normal cells. For example, they don’t know when to stop replicating and when to die. And they don’t always stick together, so they might break away and move through the blood vessels or lymphatic system and start growing somewhere else in the body.

Detailed explanation-2: -Fluid from the areas surrounding the lymph nodes drains into the lymph nodes. Cells from Tumor cells may break away from the primary tumor and be carried to a nearby lymph node. The lymphatic system is a primary mechanism for tumors to move, or metastasize, to other parts of the body.

Detailed explanation-3: -When cancer spreads, it’s called metastasis. In metastasis, cancer cells break away from where they first formed, travel through the blood or lymph system, and form new tumors in other parts of the body. Cancer can spread to almost anywhere in the body. But it commonly moves into your bones, liver, or lungs.

Detailed explanation-4: -Once fully trained, the immune cells leave the lymph nodes to monitor the body for intruders. To metastasize, cancer cells break off from the primary tumor and travel through the blood or lymph to other organs.

Detailed explanation-5: -Most cancer cells that break free from the primary tumor are carried in the blood or lymph system until they get trapped in the next “downstream” organ or set of lymph nodes.