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Facial muscle innervation

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    The facial muscles or muscles of facial expression are situated within the subcutaneous tissue and are responsible for the movements of skin folds, providing different facial expressions. The facial muscles originate from the bones of the facial skeleton viscerocranium and insert into the skin. The facial muscles are mostly grouped around the natural orifices of the face eyes, nose, mouth , taking part in the closing or widening of these orifices. The muscles in the calvaria region include the occipital and frontal bellies of the occipitofrontalis. Anatomy Next Support: support anatomynext.
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    The Proprioception in the Muscles Supplied by the Facial Nerve

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    Neuroanatomy, Cranial Nerve 7 (Facial) - StatPearls - NCBI Bookshelf

    By Juan L. Proprioception is a quality of somatosensibility that informs the central nervous system about the static and dynamics of muscles and joints. In muscles, the proprioceptive originates in the specialized sensory-organ-denominated muscle spindles. Nevertheless, facial muscles lack muscle spindles, but the facial proprioception plays key roles in the regulation and coordination of facial musculature and diverse reflexes. At the basis of these functional characteristics are the multiple communications between the facial and the trigeminal nerves, and neuroanatomical studies have demonstrated that facial proprioceptive impulses are conveyed via branches of the trigeminal nerve to the central nervous system.
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    Facial nerve

    It emerges from the pons of the brainstem , controls the muscles of facial expression, and functions in the conveyance of taste sensations from the anterior two-thirds of the tongue. It arises from the brainstem from an area posterior to the cranial nerve VI abducens nerve and anterior to cranial nerve VIII vestibulocochlear nerve. The facial nerve also supplies preganglionic parasympathetic fibers to several head and neck ganglia. The facial and intermediate nerves can be collectively referred to as the nervus intermediofacialis.
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    The facial muscles are a group of striated skeletal muscles supplied by the facial nerve cranial nerve VII that, among other things, control facial expression. These muscles are also called mimetic muscles. The facial muscles are just under the skin subcutaneous muscles that control facial expression.
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