Digestive Health. Subscribe to our Digestive Health e-newsletter to stay up to date on digestive health topics. The exact cause of inflammatory bowel disease remains unknown. Previously, diet and stress were suspected, but now doctors know that these factors may aggravate but don't cause IBD.One possible cause is an immune system malfunction.When your immune system tries to fight off an invading virus or bacterium, an abnormal immune response causes the immune system to attack the cells in the digestive tract, too.he exact cause of inflammatory bowel disease remains unknown. Previously, diet and stress were suspected, but now doctors know that these factors may aggravate but don't cause IBD.
The LV is a very important chamber that pumps blood through the aortic valve (12) and into the aorta (13). The aorta is the main artery of the body. It receives all the blood that the heart has pumped out and distributes it to the rest of the body.
Why must the heart contract very strongly to pump blood from the left ventricle into the aorta? What is the order in which the heart pumps blood? Right Atrium, right ventricle, lungs, left atrium, left ventricle, then it goes all over the body, comes back to the heart and repeats the process.     For the heart tâ¦o function properly, the four chambers must beat in an organized manner. The four heart chambers fill with and pump blood.