2. When athletes train at high altitude they are taking in air with less oxygen per volume. These oxygen levels are not high enough to provide the muscles with the necessary energy so to compensate the body releases the hormone erythropoietin, which stimulates red blood cell production. When the athletes head to competition at lower altitudes the take advantage of this increased ability to absorb oxygen, improving performance.
3. During agglutination the antibodies in the recipient’s plasma interact with the antigens on …show more content…
The human body has two circulatory systems: the cardiovascular and the lymphatic systems. Both systems aid in the circulation of body fluids, blood in the cardiovascular system and lymph in the lymphatic system. There are, however, many differences. While both systems are a network of vessels the circulatory system has a pump, the heart, but the lymphatic system lacks a pump. The cardiovascular system is a closed system, while the lymphatic system is open. Finally, the cardiovascular system is responsible for the transport and distribution of oxygen, hormones, and nutrients throughout the body. The lymphatic system, on the other hand, functions mainly in fluid balance, lipid absorption, and immunity.
5. The immune cells of the lymphatic system recognize cancer cells as foreign and attack them. This can temporarily stall the spread of cancer through the lymph nodes, until the immune cells are eventually overwhelmed.
6. The removal of lymph nodes can lead to a build up of lymph in surrounding tissues. This causes swelling and pain. It can also cause decreased range of motion in affected limbs, as a result of tissue tightness due to the