ALL COMPONENTS OF NEURONS AND NERVES
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Questions and Answers

What are neurons?

Neurons are the smallest components of the nervous system and are single nerve cells.

What forms nerves?

Axons of neurons grouped together form nerves.

What is the function of nerves in the peripheral nervous system?

Nerves connect all the muscles in the body to the brain and spinal cord.

What are the three main parts of a neuron?

<p>The three main parts of a neuron are dendrites, cell body, and axon.</p> Signup and view all the answers

What is the function of dendrites?

<p>Dendrites receive chemical signals or neurotransmitters from other neurons and transmit the electrical information down the axon of the neuron.</p> Signup and view all the answers

What is the function of the axon?

<p>The axon carries the electrical message down its length, toward the axon terminal, and is usually covered with a thin layer of myelin sheath which helps to insulate and increase the speed of transmission.</p> Signup and view all the answers

What is the function of neurons?

<p>The function of neurons is to receive and transmit information from all around the body, to other neurons, muscles, or glands.</p> Signup and view all the answers

How do neurons transmit information?

<p>Neurons transmit information through both electrical and chemical impulses.</p> Signup and view all the answers

What are the three main parts of a neuron?

<p>The three main parts of a neuron are dendrites, cell body, and axon.</p> Signup and view all the answers

What is the role of dendrites in a neuron?

<p>Dendrites receive chemical signals (neurotransmitters) from other neurons and transmit the electrical information down the axon.</p> Signup and view all the answers

What is the function of the cell body in a neuron?

<p>The cell body contains all the organelles that help keep the neuron alive and functional.</p> Signup and view all the answers

What is the role of the axon in a neuron?

<p>The axon carries the electrical message down its length, toward the axon terminal, usually covered with a myelin sheath to increase the speed of transmission.</p> Signup and view all the answers

What is the purpose of the myelin sheath?

<p>The myelin sheath, made of fat and protein, insulates the axon and increases the speed at which an electrical impulse is transmitted.</p> Signup and view all the answers

What is the difference between neurons and nerves?

<p>Neurons are individual nerve cells, while nerves are a group of neurons connected together.</p> Signup and view all the answers

What is the role of nerves in the peripheral nervous system?

<p>Nerves in the peripheral nervous system connect all the muscles in the body to the brain and spinal cord.</p> Signup and view all the answers

How are axons and neurons related?

<p>Axons are part of neurons. When the axons of neurons are grouped together, they form nerves.</p> Signup and view all the answers

What is the smallest component of the nervous system?

<p>The smallest component of the nervous system are nerve cells, called neurons.</p> Signup and view all the answers

What is the function of neurons?

<p>Neurons transmit and process information in the nervous system.</p> Signup and view all the answers

What are the two main components that form nerves?

<p>Nerves are formed by grouping together the axons of neurons.</p> Signup and view all the answers

What is the peripheral nervous system connected to?

<p>The peripheral nervous system is connected to all the muscles in the body, as well as the brain and spinal cord.</p> Signup and view all the answers

What are the functions of nerves?

<p>Nerves transmit signals from the brain and spinal cord to the muscles, and vice versa.</p> Signup and view all the answers

Which part of a neuron carries information away from the brain or spinal cord?

<p>Motor neurons (A)</p> Signup and view all the answers

What is the role of interneurons in the nervous system?

<p>Carry electrical impulses through the spinal cord and brain (C)</p> Signup and view all the answers

What type of neurons receive information from sensory receptors and send electrical impulses to the central nervous system?

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

Which type of neurons transmit sensory information and are activated by sensory input?

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

What is the role of interneurons in the nervous system?

<p>They carry electrical impulses through the spinal cord and brain (C)</p> Signup and view all the answers

What type of neurons carry information away from the brain or spinal cord to produce a response?

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

Which type of neurons transmit sensory information and are activated by sensory input?

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

What is the role of interneurons in the nervous system?

<p>To carry electrical impulses through the spinal cord and brain (B)</p> Signup and view all the answers

What type of neurons carry information away from the brain or spinal cord to produce a response?

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

What is the function of dendrites in a neuron?

<p>To receive signals from receptors and send electrical impulses (A)</p> Signup and view all the answers

What is the purpose of the myelin sheath?

<p>To insulate and protect the axon (D)</p> Signup and view all the answers

What is the role of nerves in the peripheral nervous system?

<p>To transmit sensory information (D)</p> Signup and view all the answers

What is the function of the cell body in a neuron?

<p>To receive signals from receptors and send electrical impulses (A)</p> Signup and view all the answers

What are the three main parts of a neuron?

<p>Axon, dendrites, cell body (B)</p> Signup and view all the answers

What is the role of neurons in the nervous system?

<p>To carry electrical impulses (B)</p> Signup and view all the answers

What forms nerves in the peripheral nervous system?

<p>Axons (C)</p> Signup and view all the answers

What is the function of sensory neurons?

<p>To convert external stimuli into electrical impulses. (A)</p> Signup and view all the answers

What do motor neurons do?

<p>Carry information away from the brain or spinal cord to produce a response. (A)</p> Signup and view all the answers

What is the role of interneurons in the nervous system?

<p>To carry electrical impulses through the spinal cord and brain. (C)</p> Signup and view all the answers

How do sensory neurons and interneurons work together?

<p>Sensory neurons receive signals from receptors on the hand and send electrical impulses to the spinal cord and brain, which pass the signal onto interneurons in the brain to decide what to do. (D)</p> Signup and view all the answers

What type of neurons transmit sensory information and are activated by sensory input?

<p>Sensory neurons (C)</p> Signup and view all the answers

What is the role of sensory neurons in the nervous system?

<p>To convert external stimuli into electrical impulses. (A)</p> Signup and view all the answers

What is the role of motor neurons in the nervous system?

<p>To transmit sensory information and be activated by sensory input. (A)</p> Signup and view all the answers

What is the role of interneurons in the nervous system?

<p>To carry electrical impulses through the spinal cord and brain. (A)</p> Signup and view all the answers

What happens when sensory neurons receive signals from receptors in the hand?

<p>Sensory neurons send electrical impulses to the central nervous system. (B)</p> Signup and view all the answers

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