Exam 2: Nerve Cells and Nerve Impulses

The main feature that distinguishes a neuron from other animal cells is that a neuron has:

Concentration gradients lead to what kind of movements?

When stating that the neuron's membrane is polarized, you are referring to a difference in electrical potential between:

Glial cells serve many functions.

What is the result if a stimulus shifts the potential inside a neuron from the resting potential to a more negative potential?

Nodes of Ranvier are:

Which of the following is NOT a characteristic of a dendrite?

Which type of glia builds myelin sheaths around axons in the periphery of the body?

Briefly describe the refractory period of a neuron.

The all-or-none law applies to:

What leads to Korsakoff's syndrome?

Which of the following actions would depolarize a neuron?

Which of the following is NOT a characteristic of an axon?

What is the point from which an axon releases chemicals into the synapse?

Small, charged molecules can cross the cell membrane through:

Glial cells whose function most closely resembles that of the immune system are called:

Neurons are distinguished from other cells by their shape.

The major disadvantage of a blood-brain barrier is that:

A local neuron:

The selectivity of a neuron membrane is analogous to: