The aorta is the biggest artery in the body, and it carries and distributes oxygen-rich blood to other arteries, says Regina Bailey on About Biology. It arises from the heart’s left ventricle, forms an arch and branches off into two smaller arteries in the abdomen.Know More
The aorta’s walls have three layers, which are the tunica intima, the tunica media and the tunica adventitia, states Bailey. These layers consist of connective tissue and elastic fibers, which enable the aorta to stretch to avoid over-expansion because of the pressure exerted by blood flow on the walls.
The aorta is a tube that is 1 inch in diameter and around 1 foot in length, according to WebMD. It starts at the top of the left ventricle, which is the muscular pumping chamber of the heart. The heart pumps blood into the aorta via the aortic valve. The aortic valve has three leaflets which open and close with every heartbeat to allow one-way blood flow.
The ascending aorta, one of the aorta’s sections, rises up from the heart and is around 2 inches long, explains WebMD. The aortic arch gives rise to branches that carry blood to the neck, arms and head. The descending thoracic aorta has small branches that bring blood to the ribs and several chest structures, while the abdominal aorta supplies blood to most of the body’s major organs.Learn more about Organs
According to the Canadian Lung Association, the lungs deliver oxygen to the body and remove carbon dioxide and other waste gases that the body does not need. The National Heart, Lung and Blood Institute states that the lungs lie on both side of the breastbone, and they fill the inside of the chest cavity. The left lung is smaller than the right lung to provide space for the heart.Full Answer >
The appendix is located at the end of the colon on the right side of the body. This end of the colon connects to the small intestine. The appendix drops drown approximately 4 inches from the colon into the lower right abdomen.Full Answer >
Tonsils help guard the body against infection and are considered part of the immune system. They are made out of lymphoid tissue, which creates white blood cells called lymphocytes, or T-cells. These lymphocytes help the body fight off infection. Their job is to fight pathogens that are inhaled or eaten and keep them from spreading to other parts of the bodyFull Answer >
The variances in predicted vital capacity as related to height has to do with the size of the lungs and amount of room for the diaphragm to expand inside the body. Height is only one factor that is calculated into the vital capacity measurements.Full Answer >