It is normal for arteries to flow from the main trunk to the branches.
The arteries in the human body are the conduits that carry blood to the organs in the body. Under normal circumstances, blood is ejected from the left ventricle into the aorta and the surrounding branch arteries at all levels. Therefore, it is normal for blood to flow from the main arteries to the branches of the arteries, so there is no need to worry about it.
If the blood flows from the branches to the main trunk, it is a phenomenon of venous blood flow, which is also a normal physiological structure in the body, and there is no need to worry about it.
If you have any discomfort, you should go to the hospital for examination and diagnosis, and after clarifying the cause of the disease, you will be treated under the guidance of a professional doctor and in accordance with your own situation.