Autonomic Nervous System: Divisions and Functions
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Questions and Answers

What is the role of the hypothalamus?

  • Conducting pupillary reflexes
  • Regulating only the autonomic function
  • Receiving input from the limbic lobe
  • Control center for homeostatic mechanisms (correct)

    • Which part of the brain is responsible for emotion and memory function?

  • Medulla
  • Limbic lobe (correct)
  • Hypothalamus
  • Forebrain bundle

    • What happens when nicotine affects the autonomic nervous system?

  • Heart rhythm can be affected (correct)
  • Increased parasympathetic tendency
  • Vascular tone becomes less sympathetic
  • Decreased heart rhythm

    • Which drugs enhance adrenergic function by binding to receptors and increasing norepinephrine production and release?

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

    What is the effect of sympatholytic drugs?

    <p>Interrupt sympathetic nerve signaling (D)</p> Signup and view all the answers

    What is the main pathway for communication in the hypothalamus?

    <p>Medial forebrain bundle (D)</p> Signup and view all the answers

    What is the primary function of the divisions of the Autonomic Nervous System discussed in Chapter 15?

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

    Which division of the Autonomic Nervous System is associated with the 'fight or flight' response?

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

    Where do sympathetic signals primarily come from in the Autonomic Nervous System?

    <p>Thoracic and superior lumbar nerves (A)</p> Signup and view all the answers

    Which ganglia are a part of the enteric nervous system in the Autonomic Nervous System?

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

    What type of fiber travels from the sympathetic ganglion to the target effector in the Autonomic Nervous System?

    <p>Long, unmyelinated fiber (B)</p> Signup and view all the answers

    Where do preganglionic fibers in the parasympathetic division lead to before reaching the target effector?

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

    Which type of synapse involves the release of norepinephrine to either an alpha or beta receptor?

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

    Which type of receptor is activated by acetylcholine in the cholinergic synapse?

    <p>Ligand-gated channel (C)</p> Signup and view all the answers

    What is the second signaling molecule in the adrenergic synapse?

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

    What type of nervous system has a short reflex based on distention of the stomach?

    <p>Enteric nervous system (D)</p> Signup and view all the answers

    What would be the heart rate without the parasympathetic signal to slow it down?

    <p>$100$ bpm (C)</p> Signup and view all the answers

    In which type of synapse is acetylcholine released to muscarinic receptors?

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

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