The organ that acts as a filter for blood is:

Which organ in an adult human causes the least damage if removed?

What is the function of the human spleen?

Which one of the following is a matching pair of a certain body feature and its value/count in a normal human adult?

Which of the following is correct regarding blood coagulation?
$I$. Vitamin-$K$ is necessary for the formation of prothrombin.
$II$. Conversion of fibrinogen to fibrin is done by thrombin.
$III$. Conversion of prothrombin to thrombin is done by the enzyme complex prothrombinase.
The option with the correct combination is:

Select the correct option for myogenic and neurogenic hearts.