Muscles of the head-Horse
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The cutaneous muscle of the head is less developed.
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The orbicularis oris is a complete sphincter.
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The levator labii superioris proprius inserted by a common tendon with its fellow to the upper lip.
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The depressor labii superioris is absent.
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Transversus nasi is unpaired and lies between the nostrils.
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The corrugator supercilli is a separate muscle.
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Malaris is thin and levator buccalis is absent.
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There is an additional muscle in the mandibular region the occipito-mandibularis, which extends between the paramastoid process and the posterior border of the vertical ramus
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The digastricus has a distinct intermediate tendon, which perforates the tendon of stylo-hyoideus.
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Thyro-arytenoideus is represented by ventricularis and vocalis.
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Other muscles resemble those of the ox.
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Last modified: Saturday, 15 October 2011, 9:05 AM