Exam 3: Neurons and Synapses

There is a high concentration of _____ on the outside of a neuron when it is at rest.

Voltage changes are initiated at the:

Keys are to locks as neurotransmitters are to:

Which autoimmune disease involves the scarring of myelin sheath?

A rate-coding neuron can encode a particular stimulus by modulating:

Neurons that have direct inputs from sensory organs are _______ neurons.

After neurotransmitters have done their job, they are cleaned up, either by degradation, diffusion, or:

Whether we say a neurotransmitter is excitatory or inhibitory depends on:

Many ions are required in making an action potential, but the two most critical are:

The majority of neurons in the human brain are:

The _____ helps neurons communicate quickly with one another.

Temporal summation and spatial summation both involve the integration of signals in the:

Your central nervous system needs immune defense, just like the rest of your body. Without the _____ the CNS would be more susceptible to infectious agents.

Unlike neurons, glial cells come in only _____ basic types.

Neurons may fire at any given time, even without the presence of a/an:

An _____ causes the postsynaptic neuron to become more negatively charged; this is called hyperpolarization.

Action potentials can only travel forward because the neuron enters a ______ after an action potential.

When a neuron is at rest, there is a high concentration of ____ on the inside of the cell and a high concentration of ____ on the outside of the cell.

Local coding assumes that individual neurons:

Your eyes and ears sense activity in your environment. What happens next?