Question

answer the questions.
note: ( in right side 2 nd box it is bicuspid valve) ​

Answer 1

Answer:

i) Right atrium is bigger than left atrium as a higher volume creates less pressure causing blood to fill in the atria more easily.

ii) Valves are provided to prevent backflow of blood.

iii) Left atria pumps blood with more pressure as it has to supply oxygenated blood to all the body organs.

iv) The superior and inferior Vena Cava open into the Right atrium which further pumps it to the lungs for purification. The Pulmonary vein enters into the Left atrium which carries oxygenated blood.

Hope it helps :)