The blood bank of the body or the reservoir where blood is stored and can be mobilized is:

Which of the following figures correctly represents the path of a closed circulatory system?

Consider the following four statements regarding the human circulatory system:
$(a)$ Arteries have thick walls and have a smaller lumen compared to veins.
$(b)$ Angina is a sudden chest pain.
$(c)$ In the $ABO$ blood grouping system,a person with $AB$ blood group can donate blood to anyone.
$(d)$ Calcium ions play an important role in blood clotting.
Which two of the above statements are correct?

Cardiac output is determined by which of the following?

Cords of Billroth are blood-filled spaces found in which of the following organs?

What is the need for a circulatory system?