Brainstem I: Cranial Nerves Overview
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Questions and Answers

Which of the following correctly identifies the three main parts of the brainstem?

  • Medulla oblongata, hippocampus, midbrain
  • Medulla oblongata, cerebellum, midbrain
  • Pons, medulla oblongata, midbrain (correct)
  • Cerebellum, thalamus, pons
  • Which feature is NOT a gross morphological characteristic of the brainstem?

  • Bulging pons
  • Conical medulla
  • Flat cerebellar surface (correct)
  • Cylindrical midbrain structure
  • What are the functional components of the cranial nerves primarily involved in sensory function?

  • Somatic and autonomic
  • Motor and sensory
  • Sensory and special sensory (correct)
  • Motor and reflex
  • Which cranial nerve is primarily responsible for controlling muscles of facial expression?

    <p>Facial nerve (CN VII)</p> Signup and view all the answers

    Which of the following cranial nerves has its nuclei located in the medulla oblongata?

    <p>Glossopharyngeal nerve (CN IX)</p> Signup and view all the answers

    What is the primary function of the inferior salivatory nucleus?

    <p>Control of the parotid gland</p> Signup and view all the answers

    Which cranial nerve is responsible for taste sensation from the posterior one-third of the tongue?

    <p>Glossopharyngeal nerve (CN IX)</p> Signup and view all the answers

    The nucleus ambiguus is primarily associated with which functions?

    <p>Muscles of the pharynx and larynx for swallowing and speech</p> Signup and view all the answers

    What does the dorsal nucleus of the vagus nerve primarily regulate?

    <p>Involuntary muscles of thoracic and abdominal viscera</p> Signup and view all the answers

    Which of the following cranial nerves is associated with the stylopharyngeus muscle?

    <p>Glossopharyngeal nerve (CN IX)</p> Signup and view all the answers

    Which structure is primarily responsible for the observation that the vagus nerve is often referred to as the 'wandering nerve'?

    <p>Its extensive reach throughout the body</p> Signup and view all the answers

    What is the primary target structure for the hypoglossal nerve (CN XII)?

    <p>Muscles of the tongue</p> Signup and view all the answers

    Which part of the brainstem is involved in blood pressure and blood composition sensation?

    <p>Medulla oblongata</p> Signup and view all the answers

    Which of the following are the three parts of the brainstem?

    <p>Pons, Midbrain, Medulla oblongata</p> Signup and view all the answers

    What is the primary function of the oculomotor nerve?

    <p>Facilitate eye movement</p> Signup and view all the answers

    Which structure is associated with the medulla oblongata?

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

    Which cranial nerve is responsible for supplying the tongue and pharynx?

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

    Which of these cranial nerves is involved in taste sensation?

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

    What is the function of the vestibulocochlear nerve?

    <p>Control balance and hearing</p> Signup and view all the answers

    Which cranial nerve innervates the extraocular muscles including the superior oblique muscle?

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

    What landmark is associated with both the midbrain and pons?

    <p>Interpeduncular fossa</p> Signup and view all the answers

    Which cranial nerve primarily controls breathing and heart rate?

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

    Which of the following cranial nerves originates from the pons?

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

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