Cranial Nerves Functions and Types
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Questions and Answers

Which cranial nerve is responsible for smell?

  • Vestibulocochlear
  • Optic
  • Olfactory (correct)
  • Facial
  • What is the primary function of the Abducens nerve?

  • Motor - eye abduction muscles (correct)
  • Sensory - hearing, equilibrium
  • Sensory - vision
  • Motor - extrinsic eye muscles
  • Which cranial nerve innervates the muscles of mastication?

  • Hypoglossal
  • Facial
  • Glossopharyngeal
  • Mandibular branch of the Trigeminal (correct)
  • Which cranial nerve has a sensory function related to taste for part of the tongue?

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

    What is the sensory function of the Opthalmic branch of the Trigeminal nerve?

    <p>Cornea, nasal mucosa, face skin</p> Signup and view all the answers

    Which cranial nerve controls the trapezius and sternocleidomastoid muscles?

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

    Study Notes

    Cranial Nerves

    • There are 12 cranial nerves, each with distinct functions and components.

    Olfactory Nerve (I)

    • Responsible for sensing smells.

    Optic Nerve (II)

    • Responsible for vision.

    Eye Movement and Control

    • Oculomotor Nerve (III) and Trochlear Nerve (IV): control extrinsic eye muscles.
    • Abducens Nerve (VI): controls eye abduction muscles.

    Trigeminal Nerve (V)

    • Has three branches: Ophthalmic, Maxillary, and Mandibular.
    • Ophthalmic branch: senses cornea, nasal mucosa, and face skin.
    • Maxillary branch: senses skin of face, oral cavity, and teeth.
    • Mandibular branch: controls muscles of mastication and senses face skin, teeth, and tongue (general sensation).

    Facial Expressions and Taste

    • Facial Nerve (VII): controls muscles of facial expression and senses part of tongue (taste).

    Hearing and Balance

    • Vestibulocochlear Nerve (VIII): senses hearing and equilibrium.

    Swallowing and Speech

    • Glossopharyngeal Nerve (IX): controls stylopharyngeus muscle and senses tongue (general and taste) and pharynx.
    • Vagus Nerve (X): controls pharynx, larynx, and senses pharynx, larynx, and abdominal organs.

    Neck and Shoulder Movement

    • Accessory Nerve (XI): controls trapezius and sternocleidomastoid muscles.

    Tongue Movement

    • Hypoglossal Nerve (XII): controls tongue muscles.

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    Description

    This quiz covers the 12 cranial nerves, their functions, and types. It includes nerves responsible for sensory and motor functions, including smell, vision, and facial muscles.

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