Breathing Essentials
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Questions and Answers

What happens when irritants are detected in the respiratory tract?

  • Protective reflexes such as coughing and sneezing are activated (correct)
  • The medulla oblongata is activated to initiate inspiration
  • The pyramidal tracts cross from one side to the other
  • The respiratory centre stimulates the diaphragm and intercostal muscles

    • What is the function of the pyramidal tracts?

  • To initiate inspiration
  • To control the rate and depth of respiration
  • To control voluntary movement of skeletal muscles (correct)
  • To activate protective reflexes

    • What is the reticular formation?

  • A pathway that conducts nerve impulses to the spinal cord
  • A group of sensory organs
  • A collection of neurons in the brain stem (correct)
  • A part of the cerebral cortex

    • What is the function of the reticular activating system (RAS)?

    <p>To bring about increased stimulation of the cerebral cortex</p> Signup and view all the answers

    Which area in the brainstem controls the rate and depth of respiration?

    <p>Respiratory centre</p> Signup and view all the answers

    Which part of the brain is responsible for sensory nerves crossing from one side to the other?

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

    What is an example of selective awareness mediated by the RAS?

    <p>A sleeping mother being awakened by the slightest noise made by a sick child</p> Signup and view all the answers

    Where is the cerebellum located in the brain?

    <p>Behind the pons</p> Signup and view all the answers

    What is the surface of the cerebellum made up of?

    <p>Grey matter</p> Signup and view all the answers

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