6.3.2 Structure of a Neuron

• What is a neuron?

  Nerve cell
• The major parts of a neuron include the cell body, dendrites, and axon
• The cell body of a neuron contains the nucleus and is responsible for the neuron's general functions.
• What is the primary function of dendrites in a neuron?

  Receive signals
• The axon of a neuron conducts nerve impulses away from the cell body to other neurons or target cells
• Neurons transmit both electrical and chemical signals throughout the nervous system.
• What is the role of the nucleus in the cell body of a neuron?

  General functioning
• The axon is a long, slender fiber that conducts nerve impulses away from the cell body
• What structures are located at the end of the axon to transmit signals to other neurons?

  Synaptic terminals
• The cell body of a neuron is responsible for receiving signals from other neurons.

  False
• What do dendrites transmit to the cell body of a neuron?

  Signals
• The axon of a neuron conducts nerve impulses away from the cell body
• Where are synaptic terminals located in a neuron?

  End of axon
• The axon transmits signals to other neurons through synaptic terminals.
• The cell body of a neuron contains the nucleus
• What is the function of the axon in a neuron?

  Conduct nerve impulses
• Match the neuron component with its function:

  Dendrites ↔️ Receive signals

  Axon ↔️ Conduct impulses
• What is the primary function of dendrites in a neuron?

  Receive signals
• The axon of a neuron conducts nerve impulses
• A neuron is the fundamental unit of the nervous system.
• Match the neuron component with its function:

  Cell Body (Soma) ↔️ Supports neuron functions

  Dendrites ↔️ Receives signals

  Axon ↔️ Conducts impulses

  Synaptic Terminals ↔️ Transmits signals
• Where are synaptic terminals located in a neuron?

  End of axon
• The axon is a long fiber that conducts nerve impulses away from the cell body
• Synaptic terminals transmit signals to other neurons or target cells.
• What is the main function of the cell body in a neuron?

  Integrate signals
• The axon ensures signals are transmitted efficiently over long distances
• Synaptic terminals use neurotransmitters to transmit signals.
• What is the myelin sheath composed of?

  Lipids and proteins
• The myelin sheath increases nerve impulse transmission through saltatory conduction
• Which cells form the myelin sheath in the PNS?

  Schwann cells
• Nodes of Ranvier are essential for saltatory conduction.
• Nodes of Ranvier expose the axon membrane, allowing depolarization
• How many main parts does a neuron have?

  Four
• Match the neuron component with its function:

  Cell Body (Soma) ↔️ Basic cell processes

  Dendrites ↔️ Receive signals

  Axon ↔️ Conduct impulses

  Synaptic Terminals ↔️ Transmit signals
• A neuron transmits both electrical and chemical signals.
• What is a neuron?

  A nerve cell
• The cell body, also known as the soma, contains the nucleus and manages neuron functions.
• The cell body manages the neuron's metabolism.
• What is the function of dendrites in a neuron?

  Receive signals
• The axon conducts nerve impulses away from the cell body.