The function of the arteries is to carry oxygenated blood to organs and cells in the body. Because of this, arterial blood has a bright red color and flows away from the heart.Continue Reading
Arterial walls have three layers. The outer layer is elastic connective tissue, and the middle layer is made out of muscle. The inner lining of the artery is made up of smooth cells called the endothelium, which are similar to the cells in the heart. When the heart beats, the walls of the arteries enlarge to make room for the blood that's pumped into them. Then, the muscular layer contracts slowly to pump the blood further down the arteries to the arterioles and capillaries.
The largest artery in the body is the aorta, which connects directly to the heart. Two branches of the aorta are the coronary arteries, which both send oxygen and nourishment to the heart. The carotid arteries send blood to the sides of the head and neck. The aorta divides in the abdomen to form the iliac arteries, which then continue down into the legs. When the blood is depleted of oxygen, it's collected by veins and sent to the pulmonary arteries and lungs.Learn more about Biology
The function of the peritoneum is to support and cover the organs inside the abdomen. The peritoneum is a layer of tissue that lines the stomach.Full Answer >
A group of organs working together so that they can perform a function more complex than any of the single organs is called an organ system. Each of the 11 organ systems found in the human body contributes in some manner to the survival of all its living cells. Some of the ways in which organ systems maintain the body's internal stability are by acquiring and distributing raw materials and nutrition, collecting and disposing of wastes and protecting the body from attack and injury.Full Answer >
A systemic viral infection occurs in many different systems or organs of the body, as opposed to a localized viral infection, which affects only one part or organ of the body. Because viruses are able to reproduce at a high rate, viral infections can spread quickly throughout the body.Full Answer >
Immobility has a generally negative effect on many of the major organs of the body, including the respiratory, cardiovascular, musculoskeletal and gastrointestinal systems. According to Healthy Aging, people who are old, chronically ill or otherwise not in good health are particularly susceptible to the effects of immobility, but anyone who is confined to bed rest for a long period may begin to suffer ill effects.Full Answer >