Nervous System ReviewCNS PNS Terms to know Neurons Action potential

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What does CNS stand for?

What two structures make up the CNS?

What are the three functions of the nervous system?

Any change in the internal or external environment is considered a?

A.EvolutionB.StimulusC.Action potential

The response dictated by the CNS activates ____________?

A.Nissle bodiesB.The nucleusC.A muscle or glandD.The brain

PNS stands for?

The neurons of the PNS are located___________?

A.Outside the spine and cranial cavitiesB.Inside the spine and cranial cavitiesC.In you neck only

The two sub-divisions of the PNS are _______ & _______?

A.Dendrite and axonB.Axon and axon terminalC.Somatic and autonomicD.Sensory and motor

The somatic sub-division of the motor division is responsible for what

type of control?A.Voluntary

B.Involuntary

The sub-division of the PNS that carries impulses toward the CNS is called?A.Motor(efferent) divisionB.Sensory (afferent) divisionC.PNS

Neuron carrying impulses toward the CNS is called?A.EfferentB.AfferentC.Interneuron

Neuroglia are cells of the CNS that are grouped together and are also known as A.NervesB.Support CellsC.Schwann cellsD.Myelin sheath

The two main functions of the neuron is ?A.Irritability and integrationB.Irritability and conductivityC.Irritability and translation

A neuron is also known as a A.TranslatorB.TranscriberC.NerveD.Neuroglia

The gap between neurons is known as the ?A.RiverB.SynapseC.SpaceD.Gray Matter

• Label the diagram being sure to include – Dendrite

– Cell body

– Axon

– Axon terminal

– Node of ranvier

– Myelin sheath

– Schwann cell

The ______________ carries messages Toward the cell body?A.Cell BodyB.DendriteC.AxonD.Axon Terminal

The _______________ releases neurotransmitters in order to transfer the impulse to an adjacent neuronA.Cell BodyB.DendriteC.AxonD.Axon terminal

The impulse is conducted along the __________ away from cell body, towards axon terminalsA.Cell BodyB.DendriteC.AxonD.Axon Terminal

A neuron with a cell body that has many extensions is called a

A.UnipolarB.Multipolar

C.bipolar

A neuron with fewer positive charges inside the cell then outside is said to be a

A.DepolarizedB.Resting membrane

C.Repolarization

A cell is _____________ when Na⁺ rushes inside changing the inner charge from negative

to positiveA.DepolarizationB.Resting membraneC.Repolarization

Neurons are _________________A.MitoticB.MeioticC.Amitotic

The normal ionic conditions (↑Na⁺ outside, ↑K⁺ inside) are restored once the action

potential passes by the ?A.Sodium channels

B.Potassium channelsC.Sodium potassium exchange pump

Describe the process of an action potential using the following terms:Na⁺Sodium channelK⁺Potassium channelSodium potassium exchange pumpResting membraneDepolarizationRepolarization