What is the nature of blood passing through blood vessels A, B, C and D respectively ?

What prevents clotting of blood inside the blood vessels?

What prevents clotting of blood inside the blood vessels?

What are the layers of blood vessels?

What are great blood vessels ?

What are the three types of blood vessels?

What is the labelled blood vessels A, B, C or D carries oxygenated blood ?

What prevents blood from clotting in blood vessels?

The human body has an organ A which acts as a double pump. The oxygenated blood coming from the lungs through a blood vessel B enters the upper left chamber C of the double pump. When chamber C contract, then blood goes into lower left chamb D. The contraction of chamber D forces the blood to go into a blood vessel E which supplies oxygenated blood to all the organs of the body (except the lungs). The deoxygenated blood coming out of the body organs is taken by a blood vessel F to the right upper chamber G of pumping organ. Contraction of chamber G force the deoxygenated blood into right lower chamber H. And finally the contraction of chamber H sends the deoxygenated blood into lungs through a blood vessel I. (a) What is organ A? (b) Name the blood vessel (i) B (ii) E (iii) F, and (iv) I (c) What are chambers (i) G and (ii) H ? (d) What are chambers (i) G and (ii) H ?