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Cells of the Nervous System Quiz

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Questions and Answers

Which cell type supports neurons and modulates neuronal function?

Microglia
Oligodendrocytes
Ependymal cells
Astrocytes (correct)

Which type of glia forms the insulating sheaths of axons in the central nervous system (CNS)?

Schwann cells
Ependymal cells
Microglia
Oligodendrocytes (correct)

In the peripheral nervous system (PNS), which glial cell type produces myelin sheath for only one segment of a single axon?

Microglia
Schwann cells (correct)
Ependymal cells
Astrocytes

Which statement about neurons and glia is true?

~100 distinct types of neurons are found in the whole nervous system. (C) Signup and view all the answers

What is the function of oligodendrocytes and Schwann cells?

Support neurons and modulate neuronal function (A) Signup and view all the answers

What slows down or prevents the conduction of electrical signals along an axon?

Lack of myelination (D) Signup and view all the answers

What is the main function of astrocytes at synapses?

Clear out synapses e.g. excess glutamate can become toxic (B) Signup and view all the answers

What do astrocyte processes contribute to in the nervous system?

Glial limitans of the neural tube (B) Signup and view all the answers

What is a crucial function of microglia during inflammation?

Secrete cytokines and chemokines that will serve to trigger an immune reaction (D) Signup and view all the answers

What is a function of ependymal cells?

Assist with the move of cerebrospinal fluid (CSF) (D) Signup and view all the answers

What do astrocyte endfeet provide nourishment to?

Endothelial cells that form the BBB (A) Signup and view all the answers

What is a primary role of microglia in immunological surveillance?

React to foreign invaders of the CNS (C) Signup and view all the answers

What contributes to regulating functions in the nervous system?

Contact inhibition between neighboring astrocytes (D) Signup and view all the answers

What is thought to regulate astrocyte tiling?

Contact inhibition between neighboring astrocytes (A) Signup and view all the answers