Exam 2: Structure and Function of the Nervous System

The , which is comprised of astrocytes, protects the brain from chemical compounds circulating in the body that might otherwise interfere with neuronal activity.

Which of the following cells devour and remove damaged brain cells?

All of the structures listed here are major components of the basal ganglia EXCEPT the

Which of the following is a catecholamine?

Describe the structure, and explain the function, of three types of glial cells.

Describe the structure of a prototypical neuron. In your answer, provide definitions for the following terms: soma, axon, dendrite, myelin, and synapse.

The brainstem includes all of the following components EXCEPT the

Sulci are the protruding rounded surfaces of the cortex, and gyri are the fissures and invaginations between the sulci.

Which of the following statements regarding the prenatal development of the human nervous system is correct?

Which of the following cells produce myelin in the peripheral nervous system?

All of the following terms refer to the same cortical region that processes visual input EXCEPT

The most caudal lobe of the cerebral cortex is the lobe.

The difference between gray matter and white matter is that gray matter refers to , whereas white matter refers to .

The equilibrium potential is the membrane voltage at which there is no net flow of ions in or out.

The value of the membrane potential to which an axon must be depolarized to initiate an action potential is called the potential for that neuron.

The Hodgkin-Huxley cycle describes how the depolarization of the membrane causes voltage-gated sodium channels to , allowing sodium ions to enter the cell. This change in sodium concentration then causes of the cell.

The volume of cortex that is not sensory or motor has traditionally been termed cortex.

Choose six of the following eight brain regions. For each region, briefly describe its location in the brain and one of its functions. Draw a picture to accompany your answer. -frontal lobe -parietal lobe -temporal lobe -occipital lobe -basal ganglia -hypothalamus -thalamus -cerebellum