Which of the following statements is NOT true in reference to the human lymphatic system?
A. The rate of lymph flow is similar to that of the circulation
B. The lymphatic system plays an important role in the immune process
C. Lymph nodes produce one type of white blood cells, known as lymphocytes
D. The lymphatic system is an auxiliary system for return of fluid from the tissue spaces to the circulation
The rate of lymph flow is much slower (~100 ml./hr.) than blood flow (~5 liters/min.) in humans and most animal species.