Q. The ability to respond to a stimulus is termed: polarizedirritabilitydepolarizedconductivityall-or-none response Answer: irritability

Q. An action potential: is essential for nerve impulse propagationinvolves the influx of negative ions to depolarize the membraneinvolves the outflux of negative ions to depolarize the membraneinvolves the outflux of positive ions to depolarize the membraneis initiated by potassium ion ...

Q. Impulse conduction is fastest in neurons that are: myelinatedunmyelinatedsensorymotorcerebral Answer: myelinated

Q. Immediately after an action potential is propagated, which one of the following ions rapidly diffuses out of the cell into the tissue fluid: sodiumchloridecalciumpotassiummagnesium Answer: potassium

Q. White matter refers to myelinated fibers in the? CNSPNSANSSNSboth ANS and SNS Answer: CNS

Q. Which of the following best describes the waxy-appearing material called myelin? an outermembrane on a neuroglial cella lipid-protein (lipoprotein) cell membrane on the outside of axonsa mass of white lipid material that surrounds the cell body of a neurona mass of white lipid material that ...

Q. A neuron with a cell body located in the CNS whose primary function is connecting other neurons is called a(n): efferent neuronafferent neuroninterneuronglial cellsatellite cell Answer: interneuron

Q. Collections of nerve cell bodies inside the PNS are called: gangliatractsnervesnucleitracts or ganglia Answer: ganglia

Q. The Schwann cells form a myelin sheath around the: dendritescell bodynucleusaxonnodes of Ranvier Answer: axon

Q. The term central nervous system refers to the: autonomic and peripheral nervous systemsbrain, spinal cord, and cranial nervesbrain and cranial nervesspinal cord and spinal nervesbrain and spinal cord Answer: brain and spinal cord

Q. The peripheral nervous system consists of: spinal nerves onlythe brain onlycranial nerves onlythe brain and spinal cordthe spinal and cranial nerves Answer: the spinal and cranial nerves

Q. The neuron processes that normally receives incoming stimuli are called: axonsdendritesneurolemmasSchwann cellssatellite cells Answer: dendrites