Answer: The three main branches at the top of the aortic arch are thebrachiocephalic artery, left common carotid artery, and leftsubclavian artery. The brachiocephalic artery supplies blood to theright arm and the right side of the head and neck. While the leftcommon carotid artery supplies blood to the left side of the headand neck, the left subclavian artery is responsible for bloodsupply to the left arm.
In order to reach the bloodstream it must be introduced via an area of damaged skin, intravenous injection, or damage to the stomach or intestines. One cannot, for example, cantract HIV/AIDS or hepatitis from simple exposure to blood on the surface of the skin.
Answer: You are talking about a one year child with jaundice.When the liver is healthy, his / her skin will not be yellow. The liver is a vital organ, and the child is only one. Just ensure you give him proper care from medcal professionals, and the best possible outcome has the highest chance of occuring.
Answer: It may help to step back and think about what blood does, and why it would matter that the blood is rich in oxygen (or CO2).Among other things, blood acts to transport oxygen and CO2 to or from tissues and organs, right? In order for the blood cells to carry them, the binding site on the blood cell would have to be open.So, if the blood is oxygen rich, that means that those blood cells are carrying as much oxygen as they can...there is simply no room for any CO2 to bind to the cells.So the reason it never mixes is because the oxygen is hogging the blood cells binding sites (or vice versa).
Answer: All veins (except for the pulmonary vein) receive and carry oxygenpoor blood. This oxygen poor blood enters the heart through thesuperior & inferior venae cavae to the right atrium andventricle. It is then carried by the pulmonary artery to the lungsfor oxygenation.
Answer: The vena cavas. Either the superior vena cava, which is at the top of the heart, or the inferior vena cava which is at the bottom. The blood goes into the right atrium, then to the right ventricle, and so on and so forth.