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The majority of blood vessels are innervated solely by the sympathetic division. Nevertheless, both vasoconstriction and vasodilation occur. How is this possible? In your answer, explain how blood pressure is raised, and how it is lowered.

A leukocyte is moving through the bloodstream when it comes upon a bacterial cell. Extending pseudopods, it reaches out and engulfs the bacteria, bringing it inside itself by trapping it in a vesicle, where it is later destroyed. This is an example of:

How do periods of increased sympathetic activation alter the body’s metabolic rate? 

Which of the following neuroglial cells are found only within the peripheral nervous system?

Key Word Recognition: Find the word in the text that best expresses this word in Spanish and write it here. Do not capitalize your answer, but do include accent marks if needed.   complain 

The background rate of autonomic nervous system activity is known as what?

In biology, what is the smallest living unit?

Connections In 3-4 sentences in Spanish, explain some similarities and/or differences between this article and No hay pan. Be sure to include specific details from BOTH the text AND the corto to show similarities and/or diferences.

The white matter tracts are composed of which region(s) of the neuron?

In which form of conduction do action potentials only occur at the myelin sheath gaps?