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________ are large lymphatic tissues that are located in the walls of the pharynx.

Which layer/tunica of a blood vessel contains concentric sheets of smooth muscle tissue?

The vena cavae are the largest of what type of vessel?

Why is resistance higher in vessels with a smaller diameter?

What is a possible consequence of having the spleen removed?

Capillaries with perforated/large openings in their lining are called

Venoconstriction ___________ the amount of blood within the venous system, which ________ the volume in the arterial and capillary systems.

Capillaries that have a complete lining with no pores are called

Multiple arteries joining in order to serve a single capillary network are called

Which event(s) occurs during the beginning of ventricular systole?