Exam 11: Functional Organization of Nervous Tissue

If you cut bundles of axons and their myelin sheaths in the PNS, you cut ________.

A myelin sheath is composed primarily of ________.

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

What occurs during hyperpolarization of a neuron plasma membrane?

Match the glial cell with its function. -Microglia

-Identify structure "D" on the neuron. A) Schwann cell B) Node of Ranvier C) Neuron cell body (soma) D) Dendrites E) Axon

The strength of a stimulus is communicated through

Digestion of food is regulated by the

Action potentials are conducted rapidly from one node of Ranvier to the next in a process called ________ conduction.

Axons contain ________.

The sensory (afferent) division of the peripheral nervous system

A neuron with several dendrites and a single axon would be called a ________ neuron.

Frank has a microbial infection attacking his brain. Which cell type would you expect to proliferate and be most active during this time?

When two action potentials arrive simultaneously at two different presynaptic terminals that synapse with the same postsynaptic neuron,

The respiratory center of the brain (taking into account input from chemoreceptors, pulmonary stretch receptors, and higher centers of the brain to determine respiratory output) is an example of a ________ circuit.

-The figure illustrates changes in the membrane potential during an action potential. What does "B" represent? A) Repolarization B) Depolarization C) Local potential D) Threshold E) Afterpotential

The plasma membrane of a neuron is more permeable to K⁺ because

-The figure illustrates changes in the membrane potential during an action potential. What does "E" represent? A) Repolarization B) Depolarization C) Local potential D) Threshold E) Afterpotential

Match the glial cell with its function. -Oligodendrocyte

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