BIOM 3200 Chapter Notes - Chapter 7: Bone Marrow, Hematopoietic Stem Cell, Innate Immune System
16 Aug 2016
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Document Summary
The blood serves as a transportation function to bring oxygen and nutrients, and remove waster products. Can also transport disease-causing viruses, bacteria, and their toxins. To protect against this, the circulatory system has protective mechanisms the white blood cells and the lymphatic system. The functions of the circulatory system can be divided into three broad areas: transportation, regulation, and protection: transportation. Red blood cells (erythrocytes) transport oxygen to the cells. In the lungs, oxygen from the inhaled air attaches to hemoglobin molecules within the erythrocytes and is transported to the cells for aerobic respiration. Carbon dioxide produced by cell respiration is carried by the blood to the lungs for elimination in the exhaled air. The digestive system is responsible for the mechanical and chemical breakdown of food so that it can be absorbed through the intestinal wall into the blood and lymphatic vessels.
