The Glossopharyngeal Nerve
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Questions and Answers

Which division of the autonomic nervous system is responsible for innervating the cardiovascular system?

  • Sympathetic (correct)
  • Enteric
  • Somatic
  • Parasympathetic

    • What is the primary function of the autonomic efferent pathway?

  • Coordination
  • Motor control (correct)
  • Memory formation
  • Sensory perception

    • Where are the cell bodies of the preganglionic neurons located in the autonomic efferent pathway?

  • Central nervous system (correct)
  • Peripheral ganglion
  • Target organ
  • None of the above

    • Which division of the autonomic nervous system supplies blood vessels in the body?

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

    What is the main effect of parasympathetic innervation on the heart?

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

    What is the main effect of sympathetic innervation on blood vessels?

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

    What are perivascular nerves?

    <p>Nerves that run along blood vessels</p> Signup and view all the answers

    Which vertebral level does the vagus nerve pass through the diaphragm with the esophagus?

    <p>T10</p> Signup and view all the answers

    Which type of fiber carries autonomic (visceral or involuntary) motor signals?

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

    Which cranial nerve supplies skeletal muscles of the palate, pharynx, and larynx?

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

    Which cranial nerve contains both motor and sensory fibers?

    <p>Glossopharyngeal nerve</p> Signup and view all the answers

    Which nerve supplies structures in the head and neck as far inferiorly as the lower pharynx?

    <p>Glossopharyngeal nerve</p> Signup and view all the answers

    Which fibers of the glossopharyngeal nerve carry somatic sensations from the skin of the external ear and oropharynx?

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

    Which fibers of the glossopharyngeal nerve carry taste fibers from the posterior 1/3 of the tongue?

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

    Which of the following accurately describes the pathway of GVA fibers from the heart to the spinal gray matter?

    <p>They run from peripheral to central, following sympathetic pathways until they reach the dorsal horn of the spinal cord.</p> Signup and view all the answers

    What is the most likely dermatome(s) to produce discomfort in cases of cardiac distress?

    <p>T1-5</p> Signup and view all the answers

    Which pathway do GVA fibers from the T3 spinal level take to run from the heart to the spinal gray matter?

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

    What pathway do monitoring fibers from the heart take to reach the CNS?

    <p>Cranial nerves IX and X</p> Signup and view all the answers

    Which of the following accurately describes the sympathetic supply to the heart?

    <p>The sympathetic fibers originate from spinal levels T1-5 and synapse in the stellate ganglion or middle cervical ganglion before reaching the heart.</p> Signup and view all the answers

    Where do the cardiopulmonary splanchnic nerves synapse in the sympathetic chain?

    <p>At the same spinal level where they originate.</p> Signup and view all the answers

    What is the location of the cardiac plexus?

    <p>Below the aortic arch and anterior to the right pulmonary artery.</p> Signup and view all the answers

    What is referred pain?

    <p>Pain felt at a site other than the actual anatomical location of the problem.</p> Signup and view all the answers

    Which vertebral level does the vagus nerve pass through the diaphragm with the esophagus?

    <p>T10</p> Signup and view all the answers

    Which cranial nerve supplies skeletal muscles of the palate, pharynx, and larynx?

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

    What is the main effect of parasympathetic innervation on the heart?

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

    What is referred pain?

    <p>Pain that is felt in a different location than its actual source</p> Signup and view all the answers

    Which cranial nerve contains both motor and sensory fibers?

    <p>Glossopharyngeal nerve</p> Signup and view all the answers

    Which fibers of the glossopharyngeal nerve carry taste fibers from the posterior 1/3 of the tongue?

    <p>SVA fibers</p> Signup and view all the answers

    What is the function of the carotid body?

    <p>To act as an arterial chemoreceptor</p> Signup and view all the answers

    Where are the cell bodies of the preganglionic parasympathetic neurons that innervate the parotid salivary gland located?

    <p>Otic ganglion</p> Signup and view all the answers

    Which spinal levels do the cardiopulmonary splanchnic nerves originate from?

    <p>T1-T5</p> Signup and view all the answers

    Where do the cardiopulmonary splanchnic nerves synapse in the sympathetic chain?

    <p>At their same spinal level</p> Signup and view all the answers

    What is the location of the cardiac plexus?

    <p>Base of the heart</p> Signup and view all the answers

    What is the function of sympathetic fibers in the cardiac plexus?

    <p>Increase rapidity and strength of heartbeat</p> Signup and view all the answers

    Which of the following accurately describes the pathway of the vagus nerve in the thorax?

    <p>It descends from the carotid sheath to enter the superior mediastinum and runs superficial to the arch of the aorta.</p> Signup and view all the answers

    Which nerve supplies blood vessels and lymphatic vessels in the body?

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

    What is the main effect of sympathetic innervation on blood vessels?

    <p>Constriction of blood vessels</p> Signup and view all the answers

    Which division of the autonomic nervous system supplies the heart?

    <p>Both parasympathetic and sympathetic divisions</p> Signup and view all the answers

    Which of the following accurately describes the autonomic efferent pathway in the cardiovascular system?

    <p>Consists of preganglionic neurons located in the CNS, peripheral ganglion, and target organ</p> Signup and view all the answers

    What is the main function of the autonomic efferent pathway in the cardiovascular system?

    <p>To supply smooth muscle, glands, and specialized cardiac muscle</p> Signup and view all the answers

    Which of the following accurately describes the sympathetic and parasympathetic innervation of the cardiovascular system?

    <p>Sympathetic innervation originates from the CNS and has specific effects on target organs, while parasympathetic innervation originates from the PNS and has general effects on target organs</p> Signup and view all the answers

    Which of the following accurately describes the pathway of GVA fibers from the heart to the spinal gray matter?

    <p>GVA fibers from the heart travel along sympathetic pathways without synapsing in the sympathetic chain, then enter the dorsal root to reach the spinal gray matter.</p> Signup and view all the answers

    What dermatomes are most likely to produce discomfort in cases of cardiac distress?

    <p>T1-5</p> Signup and view all the answers

    What pathway do GVA fibers from the T3 spinal level take to run from the heart to the spinal gray matter?

    <p>GVA fibers from the T3 spinal level travel along sympathetic pathways without synapsing in the sympathetic chain, then enter the dorsal root to reach the spinal gray matter.</p> Signup and view all the answers

    What pathway would monitoring fibers take from the heart to the CNS?

    <p>Monitoring fibers from the heart would travel along sympathetic pathways and synapse in the sympathetic chain before entering the dorsal root to reach the CNS.</p> Signup and view all the answers

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