Nervous System Histology

At which part of the nerve cell is an action potential generated?

• A. perikaryon

• B. soma

• C. dendrites

• D. axon hillock

• both A and B

These are sites where nerve impulses are transmitted from one neuron to another

• axon hillock

• soma

• axons

• synapses

The following glial cells originate from the neural tube except for ___________, which originates from the bone marrow

• schwann cell

• ependymal cell

• microglia

• oligodendrocyte

Ependymal cells are considered to be true epithelia

• True

• False

The following are characteristics and functions associated with astrocytes except:

• They are the most numerous glial cells

• They originate from the neural tube

• They provide structural and metabolic support of neurons

• They form myelin sheaths around the axons in the PNS

Macromolecules produced in the cell body move by anterograde transport along axonal microtubules via dynein from perikaryon to the synaptic terminals

• True

• False

The layer labeled ‘A’ refers to which layer of the cerebellum?

• Purkinje layer

• Molecular Layer

• Gray Matter

• Granular Layer

These neurons have one dendrite and one axon, and comprise the sensory neurons of the retina and olfactory epithelium.

• Multipolar neurons

• Bipolar Neurons

• Anaxonic Neurons

• Unipolar Neurons

Which one of these types of neurons is the most common?

• 
• 
• 
• 

Which one of the cells pointed at (see photo) is responsible for the myelination of axons in the CNS?

• A

• B