Exam 11: Functional Organization of Nervous Tissue

What ion is necessary for the release of neurotransmitter from synaptic vesicles?

Identify the statement that best differentiates gray matter and white matter.

The strength of a stimulus is communicated through

Identify structure "A" on the neuron.

Voltage-gated sodium channels are sensitive to changes in the extracellular concentration of

The speed of an action potential depends upon

The same neurotransmitter binds to a postsynaptic cell but produces a variety of different effects. What does this mean?

If the charge difference across the plasma membrane is decreased,

A change in the resting membrane potential has the following characteristics (non-propagated, graded, can summate). This type of change can

Neurons in the skin that are responsible for detecting pain are

Match the following concerning concentration differences across the plasma membrane. -requires ATP

The junction between two neurons is a

____________ are collections of neuron cell bodies located outside of the central nervous system. ganglia

Local hyperpolarization in a synapse is called a(an)

Gray matter has little myelination, whereas white matter has abundant myelination. TRUE

Axons

There are _____ pairs of cranial nerves and _____ pairs of spinal nerves.

In order for local potentials to trigger an action potential, the membrane must reach a level called the ______.

Which of the following is true?

An inhibitory postsynaptic potential (IPSP) can result from the