Podcast
Questions and Answers
A patient exhibits difficulty in lateral eye movement. Which cranial nerve is MOST likely affected?
A patient exhibits difficulty in lateral eye movement. Which cranial nerve is MOST likely affected?
- Abducens (VI) (correct)
- Trochlear (IV)
- Trigeminal (V)
- Oculomotor (III)
Following a traumatic injury, a patient reports a loss of taste sensation on the anterior two-thirds of their tongue. Which cranial nerve was MOST likely damaged?
Following a traumatic injury, a patient reports a loss of taste sensation on the anterior two-thirds of their tongue. Which cranial nerve was MOST likely damaged?
- Vagus (X)
- Facial (VII) (correct)
- Glossopharyngeal (IX)
- Hypoglossal (XII)
A patient presents with dysphagia (difficulty swallowing) and hoarseness. Damage to which cranial nerve would MOST likely explain these findings?
A patient presents with dysphagia (difficulty swallowing) and hoarseness. Damage to which cranial nerve would MOST likely explain these findings?
- Vestibulocochlear (VIII)
- Hypoglossal (XII)
- Abducens (VI)
- Vagus (X) (correct)
A patient is unable to protrude their tongue and it deviates to one side upon attempted extension. Which cranial nerve is MOST likely affected?
A patient is unable to protrude their tongue and it deviates to one side upon attempted extension. Which cranial nerve is MOST likely affected?
A patient reports experiencing vertigo and diminished hearing in one ear following a viral infection. Which cranial nerve is MOST likely implicated?
A patient reports experiencing vertigo and diminished hearing in one ear following a viral infection. Which cranial nerve is MOST likely implicated?
Flashcards
Trochlear Nerve (IV)
Trochlear Nerve (IV)
Moves the eyes downward and inward.
Trigeminal Nerve (V)
Trigeminal Nerve (V)
Provides facial sensation and controls chewing muscles.
Abducens Nerve (VI)
Abducens Nerve (VI)
Moves the eyes laterally (side-to-side).
Facial Nerve (VII)
Facial Nerve (VII)
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Vagus Nerve (X)
Vagus Nerve (X)
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Study Notes
- The trochlear nerve (IV) controls eye movement, specifically downward and inward motion.
- The trigeminal nerve (V) is responsible for facial sensation and chewing.
- The abducens nerve (VI) controls lateral eye movement.
- The facial nerve (VII) controls facial expressions and taste in the front two-thirds of the tongue.
- The vestibulocochlear nerve (VIII) is responsible for hearing and balance.
- The glossopharyngeal nerve (IX) is responsible for swallowing and taste in the back third of the tongue.
- The vagus nerve (X) controls parasympathetic functions, including heart rate and digestion, and contributes to swallowing and speech.
- The hypoglossal nerve (XII) controls tongue movement.
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Description
Overview of cranial nerves, including the trochlear, trigeminal, abducens, facial, vestibulocochlear, glossopharyngeal, vagus, and hypoglossal nerves. This includes their functions related to eye movement, facial sensation, chewing, hearing, balance, swallowing, taste, parasympathetic control and tongue movement.
