What describes the network of vessels that transport lymph and immune cells?

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The network of vessels that transport lymph and immune cells is the lymphatic system. It runs parallel to the blood vessels as a one-way drainage system, collecting fluid that leaks from capillaries into tissues, transporting it through lymph vessels to lymph nodes where immune responses can be activated, and returning the cleaned fluid back into the bloodstream. It also carries immune cells like lymphocytes, helping defend the body against pathogens, and even absorbs fats from the digestive system. In facial massage, supporting lymphatic flow can help move excess fluid away from tissues, reducing puffiness and aiding drainage. The other terms describe different things: blood capillaries are part of the blood circulation carrying blood, capillary pressure relates to forces across capillary walls, and oedema is swelling that can result from fluid buildup but isn’t the transport network itself.