What substances are dissolved in and carried by the plasma?
What are the two main types of white cells in the blood?
In veins blood flows at
The blood vessel with the largest lumen is
Which is the correct order of three events in the heart cycle?
In diastole
Blood is pumped to the body by the
The vessel carrying blood to the lungs is called
The mammalian circulatory system is a 'double circulatory system' because...
The circulatory system is made up of two parts