Module 1 Vocabulary

What is the primary function of a neuron?

• To produce hormones

• To transmit electrical and chemical signals

• To store energy

• To provide structural support

Which part of the neuron receives signals from other neurons?

• Axon

• Soma

• Dendrites

• Axon Hillock

Where is the action potential initiated in a neuron?

• Axon Terminals

• Soma

• Axon Hillock

• Dendrites

What is the role of the myelin sheath?

• To slow down signal conduction

• To insulate axons and speed up signal conduction

• To store neurotransmitters

• To generate action potentials

What occurs at the Nodes of Ranvier?

• Neurotransmitter release

• Action potential initiation

• Saltatory conduction

• Signal reception

Which structure releases neurotransmitters?

• Dendrites

• Axon Terminals

• Soma

• Myelin Sheath

What is the function of astrocytes?

• To produce myelin in the CNS

• To maintain the blood-brain barrier and provide metabolic support

• To remove pathogens and debris

• To produce cerebrospinal fluid

Tags

NGSS.HS-LS1-3

What is the resting membrane potential of a neuron approximately?

What happens during depolarization?

• Voltage-gated K⁺ channels open

• Voltage-gated Na⁺ channels open

• The membrane potential becomes more negative

• The neuron returns to resting potential

Which glial cell type is responsible for producing myelin in the PNS?

• Astrocytes

• Oligodendrocytes

• Schwann Cells

• Microglia