Exam 13: B: Nervous System Cells

Explain the neuron doctrine and the reticular theory of the nervous system.Which is currently held to be the most correct?

One of the components of the blood-brain barrier is:

The fastest nerve fibers in the body can conduct impulses up to approximately _____ meters per second.

In a three-neuron reflex arc,the afferent neurons synapse with the:

Small distinct regions of gray matter in the central nervous system are called:

Neurotransmitters are released in a synapse and bind to:

Match each term with its definition or description. -cell that releases the neurotransmitter

Match each term with its definition or description. -microscopic gaps in the myelin sheath

Which of the following is not used by the body as a neurotransmitter?

The myelin sheath is formed by:

Which of the following is not one of the main chemical classes of neurotransmitters?

For a neurotransmitter to produce an inhibitory postsynaptic potential,which of the following channels must open?

Nerves that contain mostly afferent fibers are called _____ nerves.

Name the two ways in which neurons are classified.Name and describe the types of neurons in each classification.

The autonomic nervous system does not stimulate:

Multipolar neurons have:

Match each term with its definition or description. -space between the presynaptic and postsynaptic cells

Neurons have:

A synapse consists of:

Describe the somatic and autonomic nervous systems.