Sympathetic Nervous System Effects Quiz
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Questions and Answers

Which division of the autonomic nervous system promotes a 'fight or flight' response?

  • Somatic nervous system
  • Central nervous system
  • Sympathetic nervous system (correct)
  • Parasympathetic nervous system
  • What effect does the sympathetic nervous system have on pupil size?

  • Dilates pupils (correct)
  • Causes irregular pupil shape
  • Has no effect on pupils
  • Constricts pupils
  • Which structure allows the sympathetic nervous system to provide vasodilation for the coronary vessels of the heart?

  • Myocytes
  • Ganglia (correct)
  • Bronchioles
  • Intestinal sphincters
  • How does the parasympathetic nervous system affect blood flow to the gastrointestinal (GI) tract?

    <p>Increases blood flow</p> Signup and view all the answers

    Which division of the autonomic nervous system stimulates orgasm?

    <p>Sympathetic nervous system</p> Signup and view all the answers

    What effect does the parasympathetic nervous system have on bronchioles?

    <p>Dilates bronchioles</p> Signup and view all the answers

    What is the main function of the parasympathetic nervous system in relation to digestion?

    <p>Stimulate salivary gland secretion</p> Signup and view all the answers

    Which nerve branches impart parasympathetic control of the myocardium?

    <p>Vagus nerves</p> Signup and view all the answers

    What effect does the parasympathetic nervous system have on the ciliary muscle?

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

    Which condition results from interruption of the sympathetic supply to the eye?

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

    Which anatomical site would a lesion affect to cause Horner’s Syndrome?

    <p>Cervical spinal cord</p> Signup and view all the answers

    How does the parasympathetic nervous system contribute to closer vision?

    <p>Constriction of pupil and contraction of ciliary muscle</p> Signup and view all the answers

    What neurotransmitter is usually released by neuron #1 in the sympathetic nervous system?

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

    Where do synapses typically occur in the sympathetic nervous system?

    <p>Paravertebral chain ganglia</p> Signup and view all the answers

    Which part of the spinal cord is associated with sacral parasympathetic outflow?

    <p>Sacral segments (S2-S4)</p> Signup and view all the answers

    Which part of the body does the cranial parasympathetic outflow provide innervation to?

    <p>Head, thorax, and abdomen</p> Signup and view all the answers

    What is the role of neuron #2 (postganglionic) in the sympathetic nervous system?

    <p>Releases norepinephrine</p> Signup and view all the answers

    What is a characteristic effect of the sympathetic nervous system on organs?

    <p>Excitatory to all organs</p> Signup and view all the answers

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