What is the approximate stroke volume?

Which of these are not involved in the coagulation of blood?

Which of the following is absent on blood?

Which of these cells are thrombocytes formed from?

What is the covering of the heart known as?

What is the average number of leukocytes per cubic mm of blood?

What is the colour of leucocytes?

Which of the following represents the depolarisation of the ventricles?