Chapter 2, Problem 4Q

The nervous system senses, interprets, and issues commands for responses to _________.

Which part of the nervous system directly controls the digestive system? a. parasympathetic nervous system b. central nervous system c. spinal cord d. sensory-somatic nervous system

What are the main functions of the spinal cord?

Figure 35.26 Which of the following statements is false? The parasympathetic pathway is responsible for relaxing the body, while the sympathetic pathway is responsible for preparing for an emergency. Most preganglionic neurons in the sympathetic pathway originate in the spinal cord. Slowing of the heartbeat is a parasympathetic response. Parasympathetic neurons are responsible for releasing norepinephrine on the target organ, while sympathetic neurons are responsible for releasing acetylcholine.

Under what circumstances might it be inadvisable to administer a clot-dissolving drug to a stroke victim?

Discuss the function of each of the following: astrocytes, oligodendrocytes, ependymal cells, in icroglia, cranium, vertebral column, meninges, cerebrospinal fluid, and blood—brain barrier.

Beta blockers are drugs that interfere with stimulation of organs by nerves of the sympathetic system. Would these drugs be useful in treating excessively high blood pressure or excessively low blood pressure?

Should Ockhams razor be considered an irrefutable principle of logic or a practical guideline? Why?

Cerebrospinal fluid _____. a. fills cavities and canals in the brain and spinal cord b. is chemically similar to blood plasma c. cushions both the brain and spinal cord d. both a and c, but not b e. a, b, and c