Chapter 35.2- 35.3 The Nervous System Vocab

cells that transmit electrical impulses

• Neurons

• Cell body

• Dendrites

• Axon

the largest part of a typical neuron

• Cell body

• Dendrites

• Axon

• myelin sheath

branched extensions of a neuron's cell body that receive incoming signals from other neurons or sensory receptors

• Dendrites

• Cell body

• Threshold

• Synapse

the long fiber that carries impulses away from the cell body

• Axon

• myelin sheath

• Cell body

• Neurons

insulating membrane that surrounds the axon of a neuron

• myelin sheath

• Resting potential

• Neurotransmitter

• Cerebrospinal fluid

the electrical charge across the membrane of a neuron in its resting state

• Resting potential

• myelin sheath

• Axon

• Dendrites

reversal of charges from negative to positive aka a nerve impulse

• Action potential

• Resting potential

• myelin sheath

• Threshold

the minimum level of a stimulus that is required to activate a neuron

• Threshold

• Synapse

• Meninges

• Cerebrum

the location at which a neuron can transfer an impulse to another cell

• Synapse

• Neurotransmitter

• Meninges

• Cerebrum

chemicals used by a neuron to transmit an impulse to another cell

• Neurotransmitter

• Synapse

• Meninges

• Cerebrum