Where did the name El NiÃ±o come from? Why is El NiÃ±o frequently described as a disruption of the usual situation in the tropical Pacific? Should we take El NiÃ±o forecasts with a grain of salt? Why don't you see much in the news about the causes of El NiÃ±o? Does El NiÃ±o originate solely in the tropics, or do the midlatitudes play an important role?
Thick blood is caused by a variety of conditions, such as heavy proteins in the blood, too much blood in circulation or a blood clot system imbalance, according to Southeastern Medical Oncology Center. Diseases such as cancer and lupus can also lead to thick blood. Continue Reading.
Arteries carry oxygen-rich blood away from the heart to the organs and tissues of the body. The arterial system is under high pressure as it receives blood from the pumping heart. Therefore, the walls of arteries are thick. They contain elastic fibers and muscle cells, which help propel the blood through them.Commonly known arteries of the human body include the aorta, the pulmonary artery, the femoral arteries, the carotid arteries and the coronary arteries.apillaries are tiny blood vessels that connect the arterial and venous sides of circulation. The walls of these vessels are only one-cell thick to allow for easy exchange of substances in the tissues.