Neurons: Structure and Function

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Questions and Answers

The part of the neuron that typically receives messages is the ______.

dendrite

Which of the following best describes the role of the axon?

  • Receiving signals from other neurons
  • Transmitting electrical impulses (correct)
  • Storing genetic information
  • Insulating the neuron

The soma of a neuron primarily functions to send messages to other neurons.

False (B)

What is the main function of the axon terminal?

<p>send messages</p> Signup and view all the answers

Match the neuron type with its description:

<p>Bipolar neuron = Neuron with one axon and one dendrite Multipolar neuron = Neuron with one axon and multiple dendrites Unipolar neuron = Neuron with a single process extending from the cell body</p> Signup and view all the answers

Which of the following structures is responsible for holding genetic information?

<p>Nucleus (D)</p> Signup and view all the answers

A nerve fiber is defined as a bundle of axons.

<p>False (B)</p> Signup and view all the answers

A nerve is a bundle composed of multiple ________.

<p>axons</p> Signup and view all the answers

Which of these lists the neuron's parts in the order that an electrical impulse travels through the cell?

<p>Dendrites -&gt; Soma -&gt; Axon -&gt; Axon Terminal (D)</p> Signup and view all the answers

Briefly define what a neuron is.

<p>brain cell that receives + sends messages</p> Signup and view all the answers

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Flashcards

Dendrites

Receives messages for the neuron.

Axon terminal

Sends messages from a neuron.

Soma

The cell body that holds the nucleus.

Nucleus

Holds genetic information of the cell.

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Axon

Conducts electrical impulses away from the neuron’s cell body.

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Neuron

A brain cell that receives and sends messages.

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Nerve Fiber

A long axon.

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Nerve

A bundle of nerve fibers (axons).

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Unipolar Neuron

Neuron with one process extending from its cell body.

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Bipolar Neuron

Neuron with two processes extending from its cell body.

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Study Notes

  • Dendrites receive messages
  • The nucleus is located in the soma
  • Axon terminals send messages

Neuron Functions

  • Axon terminals send messages
  • Dendrites receive messages
  • Soma holds the nucleus
  • The nucleus holds genetic information
  • Dendrites receive messages
  • The axon is a long part of the neuron, and electrical impulses travel down it
  • Axon terminals send messages

Neuron Types

  • The first neuron is bipolar
  • The second neuron is multipolar
  • The third neuron is unipolar

Definitions

  • A neuron is a brain cell that receives and sends messages
  • A nerve fiber is a long axon
  • A nerve is a bundle of nerve fibers (axons)

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