Anatomy of the Face - Flipbook - Page 23
Musculus Zygomaticus Minor
ORIGIN:
ACTION:
(ANTERIOR PART OF) LATERAL ASPECT OF ZYGOMATIC BONE
ELEVATES UPPER LIP, EXPOSES MAXILLARY TEETH
INSERTION:
CLINICAL SIGNIFICANCE:
MODIOLUS, BLENDS WITH MUSCLES OF UPPER LIP (MEDIAL TO
ZYGOMATICUS MAJOR MUSCLE)
ZYGOMATICUS MINOR IS A THIN PAIRED FACIAL MUSCLE
EXTENDING HORIZONTALLY OVER THE CHEEKS. IT BELONGS
TOTHE BUCCOLABIAL GROUP. WORKING IN SYNERGY WITH THE
LLSAN AND LEVATOR LABII SUPERIORIS, ZYGOMATICUS
MINOR ELEVATES THE UPPER LIP AND DEEPENS THE NASOLABIAL
LINES. THE CONSEQUENTIAL FUNCTION OF ZYGOMATICUS
MINOR IS TO CONTRIBUTE TO SEVERAL FACIAL EXPRESSIONS
SUCH AS SMILING, SMUGNESS AND CONTEMPT. ZYGOMATICUS
MINOR ALSO AIDS SPEECH, PARTICULARLY IF THE INTENTION IS
TO EMPHASIZE CERTAIN SOUNDS SUCH AS THE LETTER “E”.
BLOOD SUPPLY:
SUPERIOR LABIAL BRANCH OF THE FACIAL ARTERY
INNERVATION:
ZYGOMATIC AND BUCCAL BRANCHES OF FACIAL NERVE (CN VII)
LYMPHATIC DRAINAGE
DRAINS INTO THE MANDIBULAR NAD PAROTID LYMPH NODES
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