Neuroglia and Nerve Impulse Generation Quiz

• To conduct electrical currents
• To hold functioning neurons together and protect them (correct)
• To generate action potentials
• To transmit impulses

• A local reversal in the charge on the nerve cell membrane that spreads along the membrane (correct)
• A continuous flow of electrical current along the nerve fiber
• A sudden increase in the concentration of positive ions inside the membrane
• A decrease in the concentration of negative ions outside the membrane

• Because they have more potassium ions
• Because they have more sodium ions
• Because the electrical impulse jumps from node to node in the myelin sheath (correct)
• Because they have a larger diameter