Podcast
Questions and Answers
What is the main function of oligodendrocytes in the central nervous system?
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?
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?
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?
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?
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 effect do astrocytes have on substances entering the brain from the capillaries?
What role do oligodendrocytes play in relation to axons?
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?
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?
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?
Which of these cell types forms segments of myelin for several adjacent axons?
