1 Tennis elbow, in which a tendon on the outside of the forearm fails and begins to tear away from the bone. 2  While this injury originates near the elbow, pain may extend down the forearm. 3  Golferâs elbow, similar to tennis elbow, this injury affects the tendon on the inner side of the elbow.
The circulatory system, also called the cardiovascular system or the vascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body to provide nourishment and help in fighting diseases, stabilize temperature and pH, and maintain homeostasis.
Open circulatory systems are found in mollusks, arthropods and several other invertebrates. Open circulatory systems work by pumping blood into a hemocoel, which in turn diffuses blood and pumps it back into the circulatory system. Blood is then pumped by the heart into cavities, organs and tissues of the organism.