10 Questions
What is the primary function of ependymal cells in the CNS?
To create barriers between compartments and act as a source of neural stem cells
Which type of cell is responsible for taking up water, K+, and neurotransmitters?
Astrocytes
What is the direction of unidirectional flow of information in a neuron?
From dendrite to synapse
What is the primary function of the cell membrane in relation to compartmentalization?
To act as a barrier and regulate the movement of molecules
What is the reason for the difference in the concentration of K+ and Na+ ions between the IC and EC fluids?
Because of the differential leakiness of channels
What is the term for the movement of ions through specific channels?
Leak channels
What is the term for the potential difference between the IC and EC compartments?
Resting potential
What happens to the membrane potential when K+ permeability increases?
It becomes more negative
What is the term for the local depolarisation or hyperpolarisation in response to a stimulus?
Graded potential
What is the term for the process of the return to the resting potential?
Repolarisation
This quiz covers the functions of different glial cells, including ependymal cells, astrocytes, and microglia, and their roles in the central nervous system (CNS) environment. It also explores the compartmentalization of the CNS and the source of neural stem cells. Test your knowledge of glial cells and their importance in the CNS!
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