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As more blood returns to the heart (for example, during exercise), more blood is pumped out causing cardiac output to increase.

Which type of T cell participates in both cell-mediated and antibody-mediated immune responses?

Antibodies are produced by plasma cells which are a type of effector _____________.

Fluid in the capillaries will undergo filtration because of __________ and will reabsorb in response to _________________.

The lymph from the right arm ultimately empties into the ________ before returning to the bloodstream.

This class of antibodies is mainly found in sweat, tears, breast milk, and gastrointestinal secretions.

The amount of blood ejected from the heart with each ventricular contraction defines the ______________.

Which of these provides the body with a mechanical barrier as a defense mechanism?

What is the mechanism of action of interferons?

This will lead to inflammation, attraction of phagocytes, and enhancement of phagocytosis, and involves a large cascade of protein activation.