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

Which of the following statements are wrong?
$(i)$ Leucocytes disintegrate in the spleen and liver.
$(ii)$ $RBC$,$WBC$ and blood platelets are produced by bone marrow.
$(iii)$ Neutrophils bring about destruction and detoxification of toxins of protein origin.
$(iv)$ The important function of lymphocytes is to produce antibodies.

Differentiate between closed circulatory system and open circulatory system.

Which of the following are the pulse points of the lower limb?
$I$. Brachial $\quad$ $II$. Radial
$III$. Posterior tibial $\quad$ $IV$. Dorsalis pedis
$V$. Femoral $\quad$ $VI$. Popliteal
Select the correct option.

What is the need for a circulatory system?

Compare the statements $A$ and $B$.
$Statement A$: Blood sugar level falls rapidly after hepatectomy.
$Statement B$: The glycogen of the liver is the principle source of blood sugar.
Select the correct description: