X.Liu PSYC5130 Establishing the Membrane Potential Quiz

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What is the main function of oligodendrocytes in the central nervous system?

Form myelin around axons (correct)

Strengthen the blood-brain barrier

Regulate chemicals in synapses

Produce extracellular fluid

What did Paul Ehrlich's experiment over 100 years ago demonstrate?

The function of oligodendrocytes in the nervous system

The existence of the blood-brain barrier (correct)

The production of extracellular fluid in the brain

The role of astrocytes in synapse regulation

Which cells produce the blood-brain barrier in the brain's capillaries?

Ependymal cells

Astrocytes (correct)

Oligodendrocytes

Neurons

In which region is the blood-brain barrier weak, allowing for detection of toxic substances entering the blood?

Area postrema Signup and view all the answers

How do water molecules typically move through the blood-brain barrier?

Passively through capillary cells Signup and view all the answers

What effect do astrocytes have on substances entering the brain from the capillaries?

Regulate them closely Signup and view all the answers

What role do oligodendrocytes play in relation to axons?

Form myelin around them Signup and view all the answers

Where are larger gaps between capillary cells found, allowing greater movement of substances in and out of tissues?

Peripheral tissues Signup and view all the answers

What substance requires energy to move between tightly packed cells of capillaries in the brain?

Other molecules Signup and view all the answers

Which of these cell types forms segments of myelin for several adjacent axons?

Oligodendrocytes Signup and view all the answers

X.Liu PSYC5130 Establishing the Membrane Potential Quiz

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Questions and Answers

What is the main function of oligodendrocytes in the central nervous system?

What did Paul Ehrlich's experiment over 100 years ago demonstrate?

Which cells produce the blood-brain barrier in the brain's capillaries?

In which region is the blood-brain barrier weak, allowing for detection of toxic substances entering the blood?

How do water molecules typically move through the blood-brain barrier?

What effect do astrocytes have on substances entering the brain from the capillaries?

What role do oligodendrocytes play in relation to axons?

Where are larger gaps between capillary cells found, allowing greater movement of substances in and out of tissues?

What substance requires energy to move between tightly packed cells of capillaries in the brain?

Which of these cell types forms segments of myelin for several adjacent axons?

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