Which statement about myelination is false?Select one:Select the correct definitionMyelin sheaths are created by glial cells.Myelin serves to sharply increase the time constant of the axon.Multiple layers of closely opposed glial membranes wrap the axon and serve as an electrical insulator.Myelin is absent at the nodes of Ranvier.Sodium and potassium channels are clustered at the nodes of Ranvier.

Which type of cells form the myelin sheaths around axons?a) Schwann cellsb) Astrocytesc) Adjacent nerve cellsd) Muscle cells

The myelin sheath enables faster nerve signal transmissionQuestion 7Select one:TrueFalse

Nodes of Ranvier representGroup of answer choicespoints where two axons connect.gaps in myelin wrapping.areas of high synaptic density.segments of axon where only K+ channels are located.segments of axon where passive current flows.

What is the function of the myelin sheath?Select the correct definitionSpeeds up conduction of an action potentialLocation of protein synthesis and cellular machineryReceives incoming signals from other neuronsRegulates chemical environment for signalingRegeneration of action potential

Saltatory Conduction __________.Saltatory conduction __________Blank.Multiple Choiceis slower than conduction on an unmyelinated fiberis faster than conduction on an unmyelinated fiberoccurs only if nodes of Ranvier are lackingoccurs only if the myelin sheath is continuous