5. Circulatory System
The circulatory system is a closed duct system. It can be classified into the cardiovascular system and the lymphatic system based on different components of liquid in the duct. The cardiovascular system is composed of the heart, artery, veins and capillary vessels, in which the blood flows. The lymphatic system is composed of the lymphatic vessels, lymph nodes and lymph organs, in which lymph fluid flows, which finally flows into the veins. Through blood circulation, the body carries nutrients assimilated in the intestinal tract and oxygen inhaled from the lungs to all tissues, and discharge carbon dioxide and wastes produced in the process of metabolism via lungs, kidneys and the skin. In addition, the circulatory system conveys hormones secreted from the endocrine system to all organs so as to regulate metabolism and other physiological functions. Lymph nodes and lymph organs can produce lymph cells and antibodies, filter foreign substances and phagocytize bacteria, so they are important protective organs. Pine Pollen has the following functions on the circulatory system:
Coming next is about one of Pine Pollen function on Circulatory System
5.1 Lowering Blood Fat
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