Valves are found insome ______.

What two processes combined are referred to as internal respiration?

What must be matched between donor and recipient in organ transplantation?

_________ results when a person receives a vaccine that triggers a primary immune response and leaves memory T and B lymphocytes to initiate an attack if the pathogen reenters the body.

Agranulocytes have a common stem cell called the ______.

The tunica media is found in ______.

Which of the following formed elements has a typical count of 4,500-10,000 per μl?

The most abundant chemical in plasma is ___________.

Blood travelling to the liver can be said to be _______ in nutrients and ________ in oxygen, compared to blood elsewhere.

Blood is filtered and cleansed, and erythrocytes are stored in the ______.