Podcast
Questions and Answers
What is the primary function of the olfactory nerve (I)?
What is the primary function of the olfactory nerve (I)?
- Sense of smell (correct)
- Facial expression
- Vision
- Hearing
The oculomotor nerve (III) is responsible for vision.
The oculomotor nerve (III) is responsible for vision.
False (B)
Which cranial nerve is responsible for hearing and balance?
Which cranial nerve is responsible for hearing and balance?
Vestibulocochlear (VIII)
The __________ nerve controls the eye movement of the superior oblique muscle.
The __________ nerve controls the eye movement of the superior oblique muscle.
Match the following cranial nerves with their primary functions:
Match the following cranial nerves with their primary functions:
Flashcards
Olfactory (I)
Olfactory (I)
This nerve is responsible for your sense of smell. It carries signals from the olfactory bulb to the brain.
Optic (II)
Optic (II)
This nerve controls your vision by carrying signals from your eyes to the brain.
Oculomotor (III)
Oculomotor (III)
This nerve is responsible for eye movements, focusing the lens of your eye, and constricting your pupils.
Trochlear (IV)
Trochlear (IV)
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Trigeminal (V)
Trigeminal (V)
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Study Notes
Cranial Nerves
- Olfactory (I): Sensory nerve; Responsible for the sense of smell; Pathway travels to the olfactory bulb in the brain.
Cranial Nerves
- Optic (II): Sensory nerve; Responsible for vision.
Cranial Nerves
- Oculomotor (III): Motor nerve; Controls most eye muscles (excluding the superior oblique and lateral rectus). Functions include eye movement, pupil constriction, and focusing.
Cranial Nerves
- Trochlear (IV): Motor nerve; Controls the superior oblique eye muscle, facilitating eye movement.
Cranial Nerves
- Trigeminal (V): Mixed nerve (both sensory and motor); Sensory function involves sensation from the face, teeth, and sinuses; Motor function controls chewing muscles.
Cranial Nerves
- Abducens (VI): Motor nerve; Controls the lateral rectus eye muscle, responsible for eye movement.
Cranial Nerves
- Facial (VII): Mixed nerve; Motor component controls facial expression; Sensory function is taste for the anterior two-thirds of the tongue; Parasympathetic control of salivary and lacrimal glands.
Cranial Nerves
- Vestibulocochlear (VIII): Sensory nerve; Involved in hearing and balance.
Cranial Nerves
- Glossopharyngeal (IX): Mixed nerve; Sensory function relates to taste from the posterior one-third of the tongue; Motor function controls pharyngeal muscles; Parasympathetic control of the parotid salivary gland.
Cranial Nerves
- Vagus (X): Mixed nerve; Plays a role in autonomic function for the heart, lungs, and digestive tract; Provides sensory input from viscera; Motor control of the pharynx and larynx.
Cranial Nerves
- Accessory (XI): Motor nerve; Controls shoulder and neck movement via the sternocleidomastoid and trapezius muscles.
Cranial Nerves
- Hypoglossal (XII): Motor nerve; Responsible for tongue movement.
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