Chapter 4.3, Problem 3E

Draw and label an action potential, indicating the ion movements responsible for the rising phase and the falling phase.

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.

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.

A common membrane-bound intermediary between the receptor and the effector protein within the plasma membrane is the __________________.

The cells responsible for the transmission of the nerve impulse are ________. neurons oligodendrocytes astrocytes microglia