Why is blood needed by all the parts of a body?

Fill in the blanks The blood from the heart is transported to all parts of the body by the______ .

Which tissue is widely distributed in the body and also forms most of the parts of body ?

Read the following statements and choose the correct option Statement 1 : Atria receive blood from all parts of the body which subsequenctly flows to ventricles Statement 2 : Action potential generated at sino-atrial node passes from atria to ventricles.

Why is choke coil needed in the use of fluorescent tubes with ac mains? Why can we not use an ordinary resistor instead of the choke coil?

Why is nutrition necessary for the human body?

Why is the blood group 'O' called as universal donor?

Which of the following parts of the human body is least affected by filariasis?

A given number of atoms, N_(0) of a radioactive element with a half life T is uniformly distributed in the blood stream of a (i) Normal person A having total volume V of blood in the body. (ii) Person B in need of blood transfusion having a volume V' of blood in the body. The number of radioactive atoms per unit volume in the blood streams of the two persons after a time nT are found to be N_1 and N_2 . Prove mathematically that the additional volume of blood that needs to be transfused in the body of person B equals ((N_2 - N_1) /(N_2) ) V.