Cranial Nerves Innervations

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Questions and Answers

Which cranial nerve is responsible for sensory innervation of the upper portion of the nose?

  • CN IX (Glossopharyngeal nerve)
  • CN I (Olfactory)
  • CN V (Trigeminal nerve) (correct)
  • CN VII (Facial Nerve)

Which nerve is responsible for the motor function of the palatoglossus muscle?

  • CN IX (Glossopharyngeal nerve)
  • CN X (Vagus)
  • CN XII (Hypoglossal) (correct)
  • CN VII (Facial Nerve)

Which nerve is associated with the efferent limb of the gag reflex?

  • CN V (Trigeminal nerve)
  • CN IX (Glossopharyngeal nerve) (correct)
  • CN XII (Hypoglossal)
  • CN X (Vagus)

Which nerve innervates the true vocal cords and carina, and is very sensitive to stimuli?

<p>Recurrent Laryngeal Nerve (RLN) (C)</p> Signup and view all the answers

Which nerve lies inferior to CN V and receives preganglionic parasympathetic neurons from CN VII?

<p>Pterygopalatine ganglion (Sphenopalatine ganglion/SPG) (A)</p> Signup and view all the answers

Which nerve is responsible for the motor function of all muscles of the tongue except palatoglossus?

<p>CN XII (Hypoglossal) (D)</p> Signup and view all the answers

Which cranial nerve innervates the mucous glands of the larynx?

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

What is the color key indicating in the given text?

<p>Sensory and motor innervations (A)</p> Signup and view all the answers

Which artery supplies the tongue with blood?

<p>Lingual artery (C)</p> Signup and view all the answers

What is the landmark for awake intubation mentioned in the text?

<p>Kiesselbach’s area (C)</p> Signup and view all the answers

Which nerve innervates the cricothyroid muscle?

<p>Superior laryngeal nerve (A)</p> Signup and view all the answers

Which artery supplies the nasal cavity?

<p>Sphenopalatine artery (A)</p> Signup and view all the answers

Which ventral rami are associated with the phrenic nerve?

<p>C3, C4, C5 (A)</p> Signup and view all the answers

What is the primary function of non-adrenergic/non-cholinergic (NANC) fibers in the bronchopulmonary system?

<p>Bronchodilation (C)</p> Signup and view all the answers

Which veins drain the lungs?

<p>Pulmonary veins (D)</p> Signup and view all the answers

What is the function of sympathetic fibers of T1-T4 in the bronchopulmonary system?

<p>Weak effect on airway diameter, vasoconstriction and gland secretion inhibition (A)</p> Signup and view all the answers

What do visceral afferent fibers transmit via CN X in the bronchopulmonary system?

<p>Nociceptive and reflexive sensations (B)</p> Signup and view all the answers

Which nerve innervates most of the pharynx?

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

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