Why must a cell body be intact for an axon to regenerate? (Hint: What structure is housed only in the cell body, and what are its functions?)

Huntington's disease is characterized by a loss of normal inhibition mediated by the basal nuclei. Predict the symptoms you are likely to see with this disease.

How could you tell the difference between an injury that damaged the cerebellum and one that damaged the basal nuclei?

Why do injuries to the hippocampus interfere with the formation of new declarative memories but do not impact memories already encoded in long-term memory? Why do such injuries not affect the formation of nondeclarative memories?

Ms. Norris is brought to the emergency department with injuries to the posterior of her head resulting from a motor vehicle accident. Which lobes of the cerebrum likely sustained injuries? Predict the main signs and symptoms you will see resulting from the injury to these cerebral lobes.

On further examination, Ms. Norris is shown to be in a state of unarousable unconsciousness, or coma. Which area or system of the brain is likely damaged? Explain.

In a diving accident, Arlene damages the left side of her upper thoracic spinal cord. On which side of the body will she lose: muscle control, tactile sensation, and pain sensation? Explain.

A new diet wonder drug is designed to block the release of orexins. How might this cause weight loss? Predict the potential adverse effects that might come from blocking orexin release.

Which of the following statements about the general functions of the nervous system is false?

a. The three primary functions of the nervous system include sensory, integrative, and motor functions.

b. The integrative functions of the nervous system are its processing functions.

c. Sensory stimuli are transmitted on sensory efferent fibers to a sensory receptor.

d. Motor functions are carried out by fibers that carry signals to an effector.

The central nervous system is responsible for:

a. Integrative functions

b. Sensory functions

c. Motor functions

d. Both b and c are correct

Mark the following statements about the brain as true or false. If a statement is false, correct it to make a true statement.

Humans use only 10% of their brains.

Mark the following statements about the brain as true or false. If a statement is false, correct it to make a true statement.

The four main components of the brain are the cerebrum, the diencephalon, the cerebellum, and the brainstem.