Exam 12: Fundamentals of the Nervous System and Nervous Tissue

Chemical signals diffuse between neurons at this location.

Interneurons are found

are the neuroglial cells with cilia.

The supporting cells of the nervous system that surround and wrap neurons are derived from embryonic neuroepithelial cells from the ectoderm.

The covering of a fascicle within a nerve is the

Microglia are derived from blood stem cells rather than from neural tube and crest cells.

These neurons reside only in the CNS and connect motor and sensory neurons.

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

Figure 12.2 Use the diagrams above to answer the following questions. -Identify which diagram represents a microglial cell.

Gliomas are tumors of glial cells. This type of cancer is difficult to treat, and the one-year survival rate is poor.

Some small neurons in the CNS have no axon, only dendrites, and are

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

A(n) is a medical specialist in the study of the nervous system and its disorders.

Distinguish between converging, diverging, and reverberating neuronal circuits. Identify the role of axon collaterals and terminal branches in these circuits.

This neuronal region transmits electrical impulses away from the cell body.

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

Which cells are the macrophages of the CNS?

Motor neurons arise primarily from the

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

These glial cells arise from embryonic white blood cells.