Nervous System Basics

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Questions and Answers

What is the primary function of the peripheral nervous system?

  • Sorting messages and channeling them to the correct part of the brain
  • Analyzing information and making decisions
  • Collecting information needed to make decisions (correct)
  • Controlling our voluntary movements

What is the role of the cerebrum in the nervous system?

  • Controlling our voluntary movements, thinking, and decision-making processes (correct)
  • Gathering information from the environment
  • Controlling our physical coordination
  • Helping sort messages and channeling them to the correct part of the brain

What is the term for any change in our internal or external environment?

  • Stimulus (correct)
  • Neuron
  • Reflex action
  • Sensory receptor

What is the function of the brain stem?

<p>Helping sort messages and channeling them to the correct part of the brain (D)</p> Signup and view all the answers

What is the term for the automatic and rapid response to a stimulus?

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

What is the bundle of fibers composed of neurons that transmit information from one body part to another?

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

What is the primary function of the central nervous system?

<p>To analyze information and make decisions (A)</p> Signup and view all the answers

What type of nerves carry impulses away from the central nervous system?

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

Which of the following is NOT a component of the nervous system?

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

What is the function of interneurons?

<p>To process information from sensory nerves to decide on a response (A)</p> Signup and view all the answers

What is the role of the peripheral nervous system?

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

What is the primary function of sensory nerves?

<p>To carry impulses toward the central nervous system (A)</p> Signup and view all the answers

What is the approximate number of neurons in the human brain?

<p>100 billion (A)</p> Signup and view all the answers

Which part of the brain is responsible for controlling vital life functions such as breathing and heart rate?

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

What is the main function of the thalamus in the brain?

<p>To direct information to the correct part of the cerebral cortex (C)</p> Signup and view all the answers

What is the purpose of the hypothalamus in the brain?

<p>To control autonomic functions such as hunger and thirst (D)</p> Signup and view all the answers

What is the function of the spinal cord in the central nervous system?

<p>To receive and transmit impulses (D)</p> Signup and view all the answers

How many segments does the spinal cord have?

<p>31 (A)</p> Signup and view all the answers

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

<p>Receiving information and sending impulses to the brain or spinal cord (C)</p> Signup and view all the answers

What is the term for the difference in electrical charge between the inside and outside of a neuron?

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

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

<p>Conducting impulses from the brain or spinal cord to muscles or glands (A)</p> Signup and view all the answers

What is the term for the electrical messages sent by neurons?

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

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

<p>Carrying impulses between sensory and motor neurons (C)</p> Signup and view all the answers

What is the term for the charge of a neuron at rest?

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

What is epilepsy characterized by?

<p>Sudden convulsions, abnormal muscle jerks, seizures, and unconsciousness (D)</p> Signup and view all the answers

What is the primary cause of poliomyelitis?

<p>Polio virus (A)</p> Signup and view all the answers

What is the purpose of occupational therapy for people with amnesia?

<p>To help them cope with the condition (D)</p> Signup and view all the answers

What is a common cause of amnesia?

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

What is the recommended treatment for epilepsy?

<p>Surgery and regular medication (A)</p> Signup and view all the answers

What is polio vaccine effective in preventing?

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

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