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Central Nervous System (CNS) and Peripheral Nervous System (PNS) Neuroglia Quiz

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Central Nervous System (CNS) and Peripheral Nervous System (PNS) Neuroglia Quiz

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Questions and Answers

What is the main function of nerve cells?

Secreting hormones

Memory analysis and coordination

Contraction of muscles

Responding to stimuli and conducting impulses (correct)

Which part of a nerve cell is responsible for conducting signals or impulses?

Node of Ranvier

Cell body

Axon (correct)

Dendrite

What is the role of the Schwann sheath in a nerve cell?

Forming a protective covering around the axon (correct)

Conducting electrical impulses

Initiating muscle contractions

Producing neurotransmitters

Which part of a neuron contains the nucleus and organelles?

Cell body Signup and view all the answers

What is the main function of supporting cells in the nervous system?

Providing structural support and insulation for neurons Signup and view all the answers

What fibers of the Peripheral Nervous System receive sensory stimuli from the environment?

Afferent fibers Signup and view all the answers

Where are thermoreceptors primarily found?

In the skin Signup and view all the answers

Which type of neuron has its cell body located in the CNS?

Interneuron Signup and view all the answers

What type of receptor is responsible for detecting mechanical forces like touches and hits?

Mechanoreceptor Signup and view all the answers

Where are photoreceptors located in the body?

In the retina Signup and view all the answers

Which type of neuron carries stimuli to the CNS?

Afferent neuron Signup and view all the answers

Where are proprioceptors primarily located?

In the joints Signup and view all the answers

What is the main function of ependymal cells in the CNS?

Produce cerebrospinal fluid Signup and view all the answers

Which type of glial cells form the blood-brain barrier in both the CNS and PNS?

Astrocytes Signup and view all the answers

What is the main role of Schwann cells in the PNS?

Form the myelin sheath Signup and view all the answers

What happens when a neuron is in a depolarized state?

K+ ions enter the cell Signup and view all the answers

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 Signup and view all the answers

What is the function of microglia in the CNS?

Absorb damaged cells Signup and view all the answers