Freebase. Maasai people. The Maasai are a Nilotic ethnic group of semi-nomadic people inhabiting southern Kenya and northern Tanzania. They are among the best known local populations due to their residence near the many game parks of the African Great Lakes, and their distinctive customs and dress. The Maasai speak Maa, a member of the Nilo-Saharan language family that is related to Dinka and Nuer.
Path of a Red Blood Cell. The circulatory system consisting of the heart, arteries, capillaries, and veins, is the pumping mechanism that transports blood throughout the body.In the heart, the left ventricle contracts, pushing red blood cells into the aorta, the body's largest artery.rom here, blood moves through a series of increasingly smaller arteries, until it reaches a capillary, the junction between arteries and veins. Here oxygen molecules detach from the red blood cells and slip across the capillary wall into body tissue.
Pathway of Blood through the Pulmonary and Systemic Circuits. Humans have a closed circulatory system, meaning that blood is confined within the chambers of the heart and blood vessels. The blood is pumped by the muscular heart and continuously flows through arteries, arterioles, capillaries, venules, and veins. In humans, the right side of the heart pushes blood through the pulmonary circuit so that it can be oxygenated in the lungs. The left side of the heart pumps oxygenated blood to the entire body via the systemic circuit. Click on the buttons to review the pathway of blood flow in the pulmonary and systemic circuits.