Bell's Palsy
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7th Cranial Nerve (Cranial Nerve VII)
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Facial Muscles Supplied By the 7th
Cranial Nerve |
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Muscle |
Function |
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Epicranius
(Occipitofrontalis) |
Raises eyebrows, wrinkles forehead horizontally |
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Corrugator Supercilii |
Wrinkles forehead vertically |
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Orbicularis Oculi |
Closes eye |
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Orbicularis Oris |
Draws lips together |
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Zygomaticus Major |
Elevates angle of the mouth (laughing) |
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Buccinator |
Permits smiling; blowing / pursing of the lips |
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| Hearing structures innervated by the 7th Cranial nerve |
| Stapedius muscle - the function of this muscle is to tension the
bones of the middle ear |
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| Sensory functions innervated by the 7th Cranial nerve |
| Anterior two thirds of the tongue - taste |
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Parasympathetic functions innervated
by the 7th Cranial nerve |
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Salivary and lacrimal glands - salivation and lacrimation (saliva
and tearing of the eye) |
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