Tag: human heart

Transport of Material In Human Beings

Transport of Material In Human Beings: The circulation of blood in closed blood vessels was discovered by William Harvey, an English physiologist. In all vertebrate animals, blood flows in closed tubes and chambers and never comes in direct contact with tissues and open spaces. The circulatory system consists of heart, blood vessels and blood. The

Human Heart

Human Heart Important Facts: The circulation of blood in closed blood vessels was discovered by William Harvey, an English physiologist. The heart is a hollow, fibromuscular conical pyramidal organ made up of cardiac muscle fibers measuring about 12 cm in length, 9 cm in breadth, and thickness of about 6 cm. It is the pumping