Exam 2: Communication Within the Nervous System

A ___ neuron gives rise to an axon and to the dendritic processes from opposite ends of the soma.

A drug that blocks the effects of a neurotransmitter is called a(n):

Describe how the effects of a neurotransmitter are terminated.

During an IPSP:

Medical researchers are interested in the toxins of cone snails for potential new treatments for ___ as well as ___.

Explain how neurons encode the intensity of a stimulus.

Temporal summation and spatial summation always occur together.

Identify the principal structures of a neuron and describe the functions of each.

Chloride ions and anions are most concentrated in the:

Reuptake and deactivation are two mechanisms that prolong cellular depolarization.

When an axon transmits action potentials:

An antagonist for opiates is:

As the action potential is conducted down the axon it:

Glial cells contribute to the development and maintenance of neuronal connections;neurons form ___ times as many connections in the presence of glial cells.

Axon terminals have never been observed to form synapses on the membranes of dendrites or soma.

During the industrial revolution,many lines of train tracks were laid down through the hard work of workers,who teamed up to nail in railroad ties.Each person in the group had to hit the nail once,in sequence,for it to be properly seated.This is most similar to:

Nicotinic and muscarinic receptors are two types of ___ receptors.

If the partial depolarization arriving at an axon is sufficiently large,typically ___ or more,it can cause normally closed sodium ion channels to open.

Explain the terms agonist and antagonist using acetylcholine as an example.

Transmitter substance is secreted from the dendritic spines.