Neuron Structure and Function

Where are Nissl bodies located?

• In the dendrites

• In the axons

• In the cell body

• In the presynaptic terminals

What is the function of dendrites?

• To generate small electric currents

• To conduct action potentials

• To receive input from other neurons

• To store neurotransmitters

What is the trigger zone of a neuron?

• The axon hillock

• The dendrites

• The presynaptic terminals

• The initial segment

What are the small extensions on dendrites called?

• Axons

• Presynaptic terminals

• Dendritic spines

• Neurofilaments

Which type of neurons conduct action potentials toward the CNS?

• Sensory neurons

• Motor neurons

• Interneurons

• Bipolar neurons

What is the function of pseudo-unipolar neurons?

• To conduct action potentials to the CNS

• To receive stimuli

• To produce cerebrospinal fluid

• To form myelin sheaths around axons

Which glial cells form a supporting framework for blood vessels and neurons?

• Astrocytes

• Microglia

• Oligodendrocytes

• Ependymal cells

What is the function of astrocytes?

• To cover the surfaces of blood vessels, neurons, and the pia mater

• To phagocytize foreign substances

• To produce cerebrospinal fluid

• To form myelin sheaths around axons

How many types of CNS glial cells are there?

• Two

• Three

• Four

• Five