Exam 2: Communication Within the Nervous System

Who first observed that individual neurons were in chemical contact with each other?

Myasthenia gravis is the result of the loss of myelin.

Much to your delight,your family puts in a backyard swimming pool and your dog sips from it as it is filled with fresh water.However,much to his dismay,you throw a blue dye tablet in the deep end.As the blue dye slowly disperses from the deep end,your dog drinks farther and farther from where the dye is being introduced.Your dog changes his drinking places because of the blue dye's:

Neurotransmitter action can be terminated by:

If you could surgically remove a single neuron from the brain and place it on a slide,what structure(s)would you have to destroy?

The part of a neuron that transmits information over long distances is the:

The typical resting potential of a neuron is about:

Bob was given a general anesthetic;he knew that while most local anesthetics work by ___,this general anesthetic possibly ___.

Neurons gather information,process it,and control other neurons.

A ___ neuron's soma gives rise to a short stalk that divides into two branches.

The dendrites of a neuron:

The largest part of a neuron is the:

The relative refractory period precedes the absolute refractory period.

Just as many people want to mistakenly compare the brain's "information processing" capability and speed to that of a computer,the speed of neural impulses is often erroneously compared to the:

The muscle disorder myasthenia gravis can be treated by:

The depolarization arriving at an axon from a dendrite is called a ___ potential because it can ___.

An action potential from beginning to end lasts about:

Local potentials decay as they spread.

Ninety percent of the cells in the brain are:

Cells that convey environmental information;carry out the functions underlying thought,emotion,and movements;and transmit commands out to the body's organs and muscles are called: