Blood and Blood VesselsBy: MellisaSean Hew DanielRachel Soh
Chocolate can actually help the circulatory system. According to the Northwest Health Sciences University, chocolate contains cocoa which has antioxidants that help protect the cardiovascular system. The antioxidants help lower blood pressure and help reduce deaths related to cardiovascular disease. A 4-5 gram serving per day is enough to gain the benefits from the antioxidants found in cocoa.
The main blood vessels areArteries, Veins and Capillaries
Arteries~• Carries blood AWAY form the heart• Two main arteries are pulmonary arteries and systemic arteries
• Pulmonary arteries carry blood from Arteries~ the heart to the lungs where the blood picks up oxygen.• Systemic arteries deliver blood to the rest of the body.• Aorta is the main systemic artery and the largest artery of the body. It supply blood to the head
Veins~• Carries blood TO the heart• Four main veins are pulmonary, systemic, superficial, and deep veins.
• Pulmonary veins transports oxygenated blood from the lungs to the heart. Veins~• Systemic veins return deoxygenated blood from the rest of the body to the heart.• Superficial veins are located close to the surface of the skin and are not located near a corresponding artery• Deep veins are
Capillaries~• Important exchanges of the circulatory system occurs here• The capillaries are a single cell in diameter to aid fast and easy diffusion of gases, sugars and other nutrients to surrounding tissues.
Blood is about twice as thick as water, thanks to all the cells and other bits that float in it.
Function of Blood• Carries oxygen to cells• Carries waste products like lactic acid away from cells• White Blood Cells fight against diseases in the body
Function of Blood• Maintaining a good circulation, the blood flow keeps the body temperature at around 37oC.• Blood transport nutrients from the digestive system to the cells in our body• Substances like platelets and fibrin in the blood help to clot wounds
Red Blood Cells~• They transport oxygen from the lungs to all of the living tissues of the body and carry away carbon dioxide.• Hemoglobin is the gas that transport proteins and make up 95% of each red cell
• They seek out, identify, and bind White Blood Cells~ to alien protein on bacteria, viruse s, and fungi so that they can be removed• They also have the function of getting rid of dead or dying blood cells as well as foreign matter such as dust
Platelets~• Platelets work with blood clotting chemicals at the site of wounds• Platelets also fight diseases by releasing proteins and kill invading bacterias
Plasma~• As the heart pumps blood to cells throughout the body, plasma brings nourishment to them and removes the waste products of metabolism• Metabolism=The chemical and physical processes continuously going on in the cells of living organisms. These are the processes by which energy and matter are made available for use by the cells of an organism. Heat is a byproduct of metabolism.