12 Cranial Nerves & Their Functions

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Questions and Answers

What is the function of Cranial Nerve I: Olfactory Nerve?

  • Smell (correct)
  • Hearing
  • Taste
  • Sight

What is the main function of Cranial Nerve II: Optic?

Vision

What movements does Cranial Nerve III: Oculomotor control?

Eye, lens and pupil movement

What is the function of Cranial Nerve IV: Trochlear?

<p>Eye movement</p> Signup and view all the answers

What sensations does Cranial Nerve V: Trigeminal provide?

<p>Sensations from face and mouth; chewing muscles</p> Signup and view all the answers

What is the function of Cranial Nerve VI: Abducens?

<p>Eye movement</p> Signup and view all the answers

What functions does Cranial Nerve VII: Facial perform?

<p>Face muscles, lacrimal glands, salivary glands, taste</p> Signup and view all the answers

What are the functions of Cranial Nerve VIII: Vestibulocochlear?

<p>Balance and Hearing</p> Signup and view all the answers

What is the primary function of Cranial Nerve IX: Glossopharyngeal?

<p>Taste, Salivation, Swallowing</p> Signup and view all the answers

What are the functions of Cranial Nerve X: Vagus?

<p>Swallowing, speaking, thoracic and abdominal organs</p> Signup and view all the answers

What is the role of Cranial Nerve XI: Accessory?

<p>Voice production and neck movement</p> Signup and view all the answers

What is the main function of Cranial Nerve XII: Hypoglossal?

<p>Tongue Movement</p> Signup and view all the answers

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Study Notes

Cranial Nerves Overview

  • There are twelve cranial nerves, each associated with distinct functions related to sensory and motor capabilities.

Cranial Nerve I: Olfactory Nerve

  • Responsible for the sense of smell.

Cranial Nerve II: Optic Nerve

  • Primarily involved in vision.

Cranial Nerve III: Oculomotor Nerve

  • Controls movement of the eye, including adjustments of the lens and pupil size.

Cranial Nerve IV: Trochlear Nerve

  • Facilitates eye movement, particularly for downward and inward motion.

Cranial Nerve V: Trigeminal Nerve

  • Provides sensory information from the face and mouth, essential for chewing through motor function.

Cranial Nerve VI: Abducens Nerve

  • Governs lateral eye movement.

Cranial Nerve VII: Facial Nerve

  • Manages facial muscle movement, taste sensations, and functions of lacrimal (tear) and salivary glands.

Cranial Nerve VIII: Vestibulocochlear Nerve

  • Involved in balance and auditory functions.

Cranial Nerve IX: Glossopharyngeal Nerve

  • Responsible for taste, saliva secretion, and the act of swallowing.

Cranial Nerve X: Vagus Nerve

  • Plays a role in swallowing, speaking, and regulating functions of thoracic and abdominal organs.

Cranial Nerve XI: Accessory Nerve

  • Aids in neck movement and is crucial for voice production.

Cranial Nerve XII: Hypoglossal Nerve

  • Controls movement of the tongue, vital for speech and swallowing.

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