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An increase in _________ action potential frequency results in a(n) __________ in blood pressure.

The difference in skin color is due to the number of melanocytes in the skin.

As a person’s total length of the blood vessels increases, peripheral resistance _________, and the blood pressure _________ accordingly.

All of the following mechanisms assist veins inreturning blood to the heart EXCEPT ______.

A piece of a clot that moves from where it formed and can block another vessel elsewhere is termed _________.

Carbonic anhydrase catalyzes the reaction of carbon dioxide and water to form ______.

Which of the following is an example of chemical digestion?

The chemoreceptors that send sensory input to the respiratory centers are found in the following locations exceptthe ______.

An innate, nonspecific defense against the action of viruses that cells infected with viruses can produce is ___________.

An organic compound that the body needs in minute amounts is a __________.