Cranial Nerves Flashcards
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Questions and Answers

What is the primary function of the I Olfactory nerve?

  • Hearing
  • Smell (correct)
  • Taste
  • Vision
  • What is the primary function of the II Optic nerve?

  • Hearing
  • Vision (correct)
  • Balance
  • Touch
  • The III Oculomotor nerve is primarily responsible for which of the following?

  • Eyelid and eyeball movement (correct)
  • Hearing
  • Taste
  • Smell
  • What does the IV Trochlear nerve innervate?

    <p>Superior oblique muscle</p> Signup and view all the answers

    What functions does the V Trigeminal nerve perform?

    <p>Chewing, face &amp; mouth touch &amp; pain</p> Signup and view all the answers

    What is the main role of the VI Abducens nerve?

    <p>Turns eye laterally</p> Signup and view all the answers

    What is the primary function of the VII Facial nerve?

    <p>Controls most facial expressions, secretion of tears &amp; saliva, taste</p> Signup and view all the answers

    Which function is associated with the VIII Vestibulocochlear nerve?

    <p>Hearing and equilibrium sensation</p> Signup and view all the answers

    What does the IX Glossopharyngeal nerve sense?

    <p>Taste and carotid blood pressure</p> Signup and view all the answers

    What are the functions of the X Vagus nerve?

    <p>Senses aortic blood pressure, slows heart rate, stimulates digestive organs, taste</p> Signup and view all the answers

    What is the role of the XI Spinal Accessory nerve?

    <p>Controls trapezius &amp; sternocleidomastoid, swallowing movements</p> Signup and view all the answers

    What is the primary function of the XII Hypoglossal nerve?

    <p>Controls tongue movements</p> Signup and view all the answers

    Study Notes

    Cranial Nerves Overview

    • There are 12 pairs of cranial nerves, each with specific sensory or motor functions.
    • Cranial nerves are numbered I to XII, based on their position from anterior to posterior.

    I Olfactory

    • Responsible for the sense of smell.
    • Classified as a sensory nerve.

    II Optic

    • Provides vision by transmitting visual information from the retina.
    • Classified as a sensory nerve.

    III Oculomotor

    • Controls eyelid elevation and most eye movements.
    • Classified as a motor nerve.

    IV Trochlear

    • Innervates the superior oblique muscle, allowing the eye to move downward and laterally.
    • Classified as a motor nerve.

    V Trigeminal

    • Involved in chewing and provides sensation for the face and mouth, detecting touch and pain.
    • Classified as both sensory and motor.

    VI Abducens

    • Responsible for lateral movement of the eye.
    • Classified as a motor nerve.

    VII Facial

    • Controls the majority of facial expressions, coordinates secretion of tears and saliva, and provides taste sensations.
    • Classified as both sensory and motor.

    VIII Vestibulocochlear

    • Enables hearing and contributes to balance/equilibrium.
    • Classified as a sensory nerve.

    IX Glossopharyngeal

    • Responsible for taste sensations and monitoring carotid body blood pressure.
    • Classified as both sensory and motor.

    X Vagus

    • Plays a crucial role in autonomic functions such as heart rate, gastrointestinal stimulation, and taste.
    • Senses blood pressure from the aorta, contributing to heart rate regulation.
    • Classified as both sensory and motor.

    XI Spinal Accessory

    • Controls the muscles of the trapezius and sternocleidomastoid, vital for shoulder elevation and head movement.
    • Also assists in swallowing.
    • Classified as a motor nerve.

    XII Hypoglossal

    • Governs tongue movements essential for speech and swallowing.
    • Classified as a motor nerve.

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    Description

    Test your knowledge of the 12 cranial nerves with this flashcard quiz. Each card covers the name, function, and type of each nerve, providing a quick way to review essential neurological concepts. Ideal for students in health sciences and medicine.

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