18 Questions
What is the main function of nerve cells?
Responding to stimuli and conducting impulses
Which part of a nerve cell is responsible for conducting signals or impulses?
Axon
What is the role of the Schwann sheath in a nerve cell?
Forming a protective covering around the axon
Which part of a neuron contains the nucleus and organelles?
Cell body
What is the main function of supporting cells in the nervous system?
Providing structural support and insulation for neurons
What fibers of the Peripheral Nervous System receive sensory stimuli from the environment?
Afferent fibers
Where are thermoreceptors primarily found?
In the skin
Which type of neuron has its cell body located in the CNS?
Interneuron
What type of receptor is responsible for detecting mechanical forces like touches and hits?
Mechanoreceptor
Where are photoreceptors located in the body?
In the retina
Which type of neuron carries stimuli to the CNS?
Afferent neuron
Where are proprioceptors primarily located?
In the joints
What is the main function of ependymal cells in the CNS?
Produce cerebrospinal fluid
Which type of glial cells form the blood-brain barrier in both the CNS and PNS?
Astrocytes
What is the main role of Schwann cells in the PNS?
Form the myelin sheath
What happens when a neuron is in a depolarized state?
K+ ions enter the cell
In its relaxed state (polarized), what is the charge relationship between the inside and outside of a neuron?
Inside has a negative charge, outside positive
What is the function of microglia in the CNS?
Absorb damaged cells
Test your knowledge on neuroglia in the CNS and PNS. Learn about the functions of ependymal cells, astrocytes, microglia, and oligodendrocytes. Explore the roles of satellite cells and Schwann cells in the PNS.
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