Exam 12: Fundamentals of the Nervous System and Nervous Tissue

Use the diagram pictured above to answer the following questions. -Identify the letter that indicates the region of a neuron from which the axon leaves the cell body.

The covering of a fascicle within a nerve is the

Which of the following is not a characteristic of neurons?

Nearly all somatic sensory neurons are of this type, based on the classification of the type and number of processes.

Microglia are ciliated to help circulate cerebrospinal fluid (CSF).

Which cells provide the myelin sheath for neurons in the PNS?

________ form the myelin sheaths in the brain and spinal cord.

Myelin on axons functions to

________ components of the PNS regulate contraction of smooth and cardiac muscle.

Sensory neurons arise primarily from the

The ________ matter of the spinal cord forms a butterfly-shaped structure.

Astrocytes perform all of the following functions except

A neuron is a collection of nerve fibers in the PNS.

A nerve cell is the same as a

The simplest of all reflexes, involving just two neurons, is the ________ reflex.

Use the diagrams above to answer the following questions. -Identify which letter represents the most abundant category of glial cells in the CNS.

Which of the following most immediately encases the smallest component of a nerve?

Which of the following statements about an axon is false?

These glial cells surround the cell bodies of sensory neurons within ganglia of the PNS.

These glial cells arise from embryonic white blood cells.