Exam 11: Fundamentals of the Nervous System and Nervous Tissue

Saltatory conduction is made possible by ________.

Efferent nerve fibers may be described as motor nerve fibers.

When one or more presynaptic neurons fire in rapid order it produces a much greater depolarization of the postsynaptic membrane than would result from a single EPSP; this event is called ________ summation.

Multiple sclerosis (MS) is a disease in which the myelin sheaths are destroyed. What process does this interfere with and what would be the consequence?

Reflexes are rapid, automatic responses to stimuli.

The nodes of Ranvier are found only on myelinated, peripheral neuron processes.

Figure 11.1 Using Figure 11.1, match the following: -Which is by far the most common neuron type?

Which ion channel opens in response to a change in membrane potential and participates in the generation and conduction of action potentials?

Which of the following is an excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle?

Figure 11.2 Using Figure 11.2, match the following: -Postsynaptic membrane.

Sally, a 5-year-old child, was bitten on the hand by a bat that was later diagnosed with rabies. She was immediately treated after the bite but had to go through a series of more involved treatments after the rabies diagnosis in the bat that bit her. How does the rabies virus get to the brain from a simple hand wound?

Potentials that are short-lived, local changes in membrane potential that can be either depolarized or hyperpolarized are called ________ potentials.

Neuroglia found in the CNS that bind axons and blood vessels to each other are called ________.

Define synaptic delay.

Which of the choices below describes the ANS?

If bacteria invaded the CNS tissue, microglia would migrate to the area to engulf and destroy them.

An inhibitory postsynaptic potential (IPSP) is associated with ________.

Cell bodies of sensory neurons may be located in ganglia lying outside the central nervous system.

Match the following: A) Reverberating circuit B) Diverging circuit C) Converging circuit D) Parallel after-discharge circuit -May be involved in complex, exacting types of mental processing.

Figure 11.1 Using Figure 11.1, match the following: -Which neuron is rare?