Autonomic Systems Overview
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Questions and Answers

What structures primarily receive innervation from the parasympathetic division?

  • Skin and skeletal muscles
  • Adrenal glands and kidneys
  • Head and thoracic viscera (correct)
  • Liver and gallbladder
  • Which cranial nerve carries the majority of parasympathetic output?

  • Cranial nerve IX
  • Cranial nerve X (correct)
  • Cranial nerve III
  • Cranial nerve VII
  • Which statement accurately describes the efferent pathways in the sympathetic division?

  • Each preganglionic axon synapses with only one ganglionic cell.
  • They have longer postganglionic axons than preganglionic axons.
  • They synapse onto many ganglionic cells, typically 24 or more. (correct)
  • Preganglionic axons do not branch significantly.
  • What is a primary effect of sympathetic activation on body systems?

    <p>Increased heart rate and blood flow</p> Signup and view all the answers

    Which of the following cranial nerves is involved in the parasympathetic control of salivary glands?

    <p>Both B and C</p> Signup and view all the answers

    What is the primary role of the sympathetic division of the autonomic nervous system?

    <p>To support the body's fight or flight response</p> Signup and view all the answers

    Which of the following is an effect of parasympathetic activation on the heart?

    <p>Decrease heart rate</p> Signup and view all the answers

    What represents the structure of the efferent pathways in the autonomic nervous system?

    <p>Two neuron pathway from CNS to effectors</p> Signup and view all the answers

    How does the sympathetic division affect the digestive tract?

    <p>Decreases motility and secretions</p> Signup and view all the answers

    Which cranial nerve is primarily associated with parasympathetic functions?

    <p>Vagus nerve (X)</p> Signup and view all the answers

    Which effectors receive sympathetic input only?

    <p>Sweat glands</p> Signup and view all the answers

    What happens to the bronchial passages during sympathetic activation?

    <p>They dilate</p> Signup and view all the answers

    Which statement about the autonomic nervous system's dual innervation is accurate?

    <p>Opposing effects of sympathetic and parasympathetic divisions can balance the body’s functions</p> Signup and view all the answers

    What is a characteristic of the sympathetic division of the autonomic nervous system?

    <p>Preganglionic cell bodies are located in the thoraco-lumbar segments of the spinal cord.</p> Signup and view all the answers

    Where do the preganglionic neurons of the parasympathetic division originate?

    <p>In the brainstem and sacral segments of spinal cord S2, S3, S4.</p> Signup and view all the answers

    Which statement accurately describes the organization of the sympathetic nervous system?

    <p>Preganglionic axons leave the spinal cord through the ventral roots.</p> Signup and view all the answers

    What effect does activation of the sympathetic division generally have on the body?

    <p>Decreases blood flow and digestive activity</p> Signup and view all the answers

    Which of the following structures is part of the sympathetic nervous system?

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

    Which ganglia are located close to large abdominal arteries and are part of the sympathetic division?

    <p>Celiac, superior mesenteric, and inferior mesenteric ganglia</p> Signup and view all the answers

    Which statement best describes the function of the adrenal medulla in the sympathetic nervous system?

    <p>It secretes hormones directly into the blood rather than onto an effector.</p> Signup and view all the answers

    What is the primary role of cranial nerves in the parasympathetic division?

    <p>They carry preganglionic axons to peripheral ganglia.</p> Signup and view all the answers

    Study Notes

    Document Information

    • Document title: B223-14-Autonomi...
    • Document identifier: B223-14-Autonomic-converted
    • Date: December 2, 2021
    • Time: 2:22 PM

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    Description

    This quiz explores the fundamentals of autonomic systems, focusing on their components and functionalities. Designed for learners who are diving into the world of autonomous technology, it helps assess understanding of key concepts and applications in real-world scenarios.

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