Exam 2: Communication Within the Nervous System

Where can sodium ions enter a myelinated axon?

Sensory neurons:

In the psychology office,the more urgent the memorandum,the more likely it will be assigned to the secretary who can type the fastest.As urgency of memo relates to the work being done by the person who types the fastest rate of words per minute,so does stimulus intensity relate to:

The resting membrane potential is:

One function of the specialized protein channels in a cell membrane is to:

You will find very few sushi bars that will serve fugu because:

The swellings on the ends of axonal branches are called:

Most unipolar and bipolar neurons are sensory in nature.

With a bigger fire,a larger diameter water hose will be needed to put out more water per second.Likewise,___ axons have evolved to provide less resistance to the conduction of neural potentials.

William,a philosophy major,asked Ian the psychology major what type of cell contributes the most to Ian's "being" who he is.Without hesitation,Ian replied:

Which of the following is the principal excitatory neurotransmitter in the brain?

What is a graded potential? Contrast its role in myelinated and unmyelinated neurons.

The most common type of neuron in the nervous system is the bipolar neuron.

Where do graded potentials become action potentials?

When you call your sleeping dog,his eyelids flutter;you call louder and his ears perk up;you call even louder and he wakes up.This is because:

The gap between two adjacent neurons was first observed by___ and is called the ___.

Explain the different types of synapses and presynaptic excitation and inhibition.

___ neurons control movements and actions of organs.

An action potential occurs at a specific strength for that neuron,regardless of the stimulus intensity;this is known as the:

Sarah threw rocks of different sizes into a pond.Just as ripple size was a function of size of rock,graded potentials ___ as a function of stimulus intensity.