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Question 1 of 10
Our nervous system is organized in various subdivisions. Which two main subdivisions consist our nervous system of?
Question 2 of 10
In the central nervous system (CNS) we have ependymal cells. What is their function?
Question 3 of 10
In which part of the nerve cells are the nerve impulses / the action potential generated and transmitted?
Question 4 of 10
Axons are often (but not always) covered with a myelin sheet (MS). What is the function of the MS?
Question 5 of 10
Which two ions are most important regarding to generating and transmitting the nerve signal (action potential)?
Question 6 of 10
The membrane potential of cells is about -70mV (millivolts). This tells us that there is more negative charge inside the cell compared to the outside of the cell. The main factors that regulate the membrane potential is the distribution of sodium (Na+), potassium (K+) and proteins (which on average is negatively charged) inside and outside of the cell. If we open an ion channel for Na+, what happens?
Question 7 of 10
Which description of depolarisation is correct?
Question 8 of 10
What is a synapse?
Question 9 of 10
What is a neurotransmitter substance?
Question 10 of 10
In a synapse where the presynaptic neuron secretes a neurotransmitter substance that opens Na+-channels on the postsynaptic neuron, which of the following explanation is correct?