Autonomic Nervous System Organization Quiz
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Autonomic Nervous System Organization Quiz

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Questions and Answers

How does the Autonomic Nervous System (ANS) functionally maintain homeostasis?

  • Regulates skeletal muscle movement
  • Controls the release of neurotransmitters in the brain
  • Regulates the sense of touch and pain perception
  • Regulates body temperature via control of sweat glands and vascular smooth muscle (correct)

    • How does the ANS differ from the Somatic Nervous System anatomically?

  • The ANS is only involved in involuntary actions, while the somatic NS is responsible for voluntary actions
  • The ANS directly controls skeletal muscles, while the somatic NS controls smooth and cardiac muscles
  • The ANS and somatic NS have the same anatomical structure
  • The ANS controls effectors via a two neuron chain, while the somatic NS synapses directly onto effectors (correct)

    • Which division of the ANS predominates during resting conditions?

  • Sympathetic nervous system (SyNS)
  • Parasympathetic nervous system (PsyNS) (correct)
  • Somatic nervous system
  • Central nervous system

    • What is the primary function of the Sympathetic Nervous System (SyNS)?

    <p>Predominates during exertion or emergencies, often referred to as 'fight or flight'</p> Signup and view all the answers

    Which division of the autonomic nervous system has preganglionic neuronal cell bodies located in brainstem cranial nerve nuclei?

    <p>Parasympathetic Division</p> Signup and view all the answers

    Which cranial nerves carry axons for the parasympathetic division?

    <p>CN III, VII, IX, and X</p> Signup and view all the answers

    Which part of the body receives parasympathetic innervation via the pelvic splanchnic nerves?

    <p>Distal abdomen &amp; pelvis</p> Signup and view all the answers

    Which division of the autonomic nervous system innervates the viscera of the face?

    <p>Parasympathetic Division</p> Signup and view all the answers

    Which part of the body receives parasympathetic innervation via the vagus nerve?

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

    Which division of the autonomic nervous system innervates the urinary bladder?

    <p>Parasympathetic Division</p> Signup and view all the answers

    Which part of the body receives sympathetic innervation from spinal cord levels T1 – T5?

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

    Which division of the autonomic nervous system has ganglionic neurons located in the sympathetic chain ganglia?

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

    Which part of the body receives sympathetic innervation via the celiac ganglion?

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

    Which division of the autonomic nervous system has preganglionic neurons located in the IML cell column, S2-S4?

    <p>Parasympathetic Division</p> Signup and view all the answers

    Which part of the body receives sympathetic innervation via the superior mesenteric ganglion?

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

    Which division of the autonomic nervous system generally antagonizes the sympathetic division?

    <p>Parasympathetic Division</p> Signup and view all the answers

    Where are the preganglionic neurons of the parasympathetic nervous system located?

    <p>In the brainstem &amp; spinal cord (S2-S4)</p> Signup and view all the answers

    Which part of the body is controlled by the sympathetic nervous system?

    <p>Limbs &amp; body wall</p> Signup and view all the answers

    Where are the postganglionic neurons of the parasympathetic nervous system located?

    <p>In effector organs</p> Signup and view all the answers

    Which part of the body is innervated by postganglionic sympathetic neurons in prevertebral ganglia?

    <p>Abdomen &amp; pelvis</p> Signup and view all the answers

    Where are the preganglionic neurons of the sympathetic nervous system located?

    <p>In the spinal cord (T1-L2)</p> Signup and view all the answers

    Which part of the body is innervated by postganglionic sympathetic neurons in paravertebral ganglia?

    <p>Thoracic viscera and face</p> Signup and view all the answers

    What acts as a modified sympathetic ganglion, releasing epinephrine and norepinephrine into the bloodstream?

    <p>Adrenal medulla</p> Signup and view all the answers

    Where does the somatic innervation occur?

    <p>Skeletal muscle by somatic motor neurons</p> Signup and view all the answers

    Where do the preganglionic sympathetic fibers target different dermatomes?

    <p>Spinal grey matter</p> Signup and view all the answers

    Where is the sensory input via dorsal horns received?

    <p>Spinal grey matter</p> Signup and view all the answers

    Where does the sympathetic nervous system innervate the body wall & limbs through postganglionic neurons?

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

    Where does the sympathetic nervous system target the smooth muscle of limbs & body wall?

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

    Study Notes

    Autonomic Nervous System Organization

    • Autonomic nervous system (ANS) consists of sympathetic (SyNS) and parasympathetic (PSyNS) divisions
    • SyNS controls most vascular smooth muscle, limbs & body wall; PSyNS controls digestion
    • SyNS preganglionic neurons in spinal cord (T1-L2), PSyNS in brainstem & spinal cord (S2-S4)
    • SyNS postganglionic neurons in sympathetic ganglia near spinal cord, PSyNS ganglia in effector organs
    • Spinal grey matter: sensory input via dorsal horns, somatic motor via ventral horns, autonomic via IML
    • SyNS targets smooth muscle of limbs & body wall, viscera of head & thorax, and abdomen & pelvis
    • Somatic innervation: skeletal muscle by somatic motor neurons, sensory input via dorsal root ganglia
    • SyNS innervates body wall & limbs through postganglionic sympathetic neurons in paravertebral ganglia
    • Preganglionic sympathetic fibers can ascend or descend within the sympathetic chain to target different dermatomes
    • SyNS innervates thoracic viscera and face through postganglionic sympathetic neurons in paravertebral ganglia
    • Abdominopelvic viscera innervated by postganglionic sympathetic neurons in prevertebral ganglia
    • Adrenal medulla acts as a modified sympathetic ganglion, releasing epinephrine and norepinephrine into the bloodstream

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    Related Documents

    300-16 The Autonomic Nervous System (1).pdf

    Description

    Test your knowledge of the organization of the autonomic nervous system (ANS) with this quiz. Explore the divisions, control of smooth muscle, location of preganglionic neurons, innervation of different body regions, and the role of sympathetic ganglia.

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