Physiology of Autonomic Nervous System
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Questions and Answers

Which division of the autonomic nervous system is responsible for the 'rest and digest' functions?

  • Splanchnic
  • Craniosacral
  • Parasympathetic (correct)
  • Sympathetic
  • Which nerve carries fibers to the heart, lungs, stomach, upper intestine, and ureter?

  • Glossopharyngeal nerve (IX)
  • Vagus nerve (X) (correct)
  • Trochlear nerve (IV)
  • Olfactory nerve (I)
  • Which division of the autonomic nervous system is associated with the 'fight or flight' response?

  • Sympathetic (correct)
  • Splanchnic
  • Parasympathetic
  • Craniosacral
  • Which segment of the spinal cord gives rise to parasympathetic nerve fibers?

    <p>Sacral segments</p> Signup and view all the answers

    Which function is NOT associated with the sympathetic nervous system?

    <p>Diversion of blood flow from muscles to skin</p> Signup and view all the answers

    What are the functions of the cranial nerves III, VII, and IX in the parasympathetic nervous system?

    <p>Affect both pupil size and salivary gland secretion</p> Signup and view all the answers

    Which division of the autonomic nervous system is responsible for fear, flight, or fight responses?

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

    What is the main function of the sacral fibers in the parasympathetic nervous system?

    <p>Innervate smooth muscles in the digestive system</p> Signup and view all the answers

    Which part of the nervous system enables the body to be prepared for fear, flight, or fight responses?

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

    What are the functions of the vagus nerve (X) in the parasympathetic nervous system?

    <p>Innervates smooth muscles in the digestive system</p> Signup and view all the answers

    Where do the cell bodies of motor neurons reside in the somatic nervous system?

    <p>In the brain or spinal cord</p> Signup and view all the answers

    What is the main anatomical difference between the motor pathways of the somatic nervous system and the autonomic nervous system?

    <p>Somatic neurons have one motor neuron, while autonomic neurons have chains of two motor neurons</p> Signup and view all the answers

    Where are the sympathetic ganglia located?

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

    Which type of neurons are characteristic of parasympathetic innervation of visceral targets?

    <p>Long preganglionic and short postganglionic neurons</p> Signup and view all the answers

    What is the origin of the sympathetic nervous system?

    <p>Lateral horns of spinal segments T1-L2</p> Signup and view all the answers

    What type of muscle does visceral motor innervate?

    <p>Smooth muscles</p> Signup and view all the answers

    What is the function of the dorsal root ganglion?

    <p>That is sensory</p> Signup and view all the answers

    What is the composition of the peripheral nervous system?

    <p>Formed by neurons and their process present in all regions of the body.</p> Signup and view all the answers

    What are the locations of parasympathetic ganglia?

    <p>Close to or on target organs.</p> Signup and view all the answers

    Where do preganglionic neurons of parasympathetic innervation originate from?

    <p>Long axons extending to the organ they serve.</p> Signup and view all the answers

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