Human Muscle Chart.pdf - For Quiz#5 Axial Muscles Muscle Name Nasalis Orbicularis oculis Orbicularis oris Buccinator Zygomaticus major Zygomaticus minor

Human Muscle Chart.pdf - For Quiz#5 Axial Muscles Muscle...

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Muscle Name Origin Insertion Action Nasalis Maxillary bone; alar cartilage of nose Bridge of nose Compresses nostrils; dilates nostrils Orbicularis oculis Medial aspect of bony orbit Skin around eyelids Closes eyelid; acts during squinting and blinking Orbicularis oris Maxillary bone; mandible Lips Closes and protrudes lips as in speaking, kissing, and whistling Buccinator Maxillary bone; mandible Blends with fibers of orbicularis oris Compresses cheek while whistling or blowing Zygomaticus major Zygomatic bone Angle of mouth Raises lateral corner of mouth for smiling Zygomaticus minor Zygomatic bone Upper lip Raises upper lip Levator Labii Superioris Inferior aspect of bony orbit Blends with fibers of orbicularis oris Elevates upper lip; dilates nostrils Depressor Anguli Oris Anterolateral surface of mandible Skin at angle of mouth Depresses angle of mouth Depressor Labii Inferioris Anterolateral surface of mandible Skin of lower lip Depresses lower lip Mentalis Anterior surface of mandible Skin of chin Protrudes lower lip; wrinkles skin on chin Masseter Zygomatic arch Lateral Surface of mandibular ramus Elevates mandible to close jaw; protrudes mandible Temporalis Temporal bone Coronoid process of mandible Elevates mandible to close jaw; retrudes mandible Hyoglossus Hyoid bone Tongue Depresses tongue Sternocleidomastoid Manubrium; medial one-third of clavicle Mastoid process; occipital bone near mastoid process Flexion and lateral flexion of neck; rotates head so that face is turned superiorly and to the opposite side Mylohyoid Inferior margin of mandible at the chin Hyoid bone Elevates hyoid bone, tongue, and floor of mouth during swallowing and speaking For Quiz #5: Axial Muscles
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Sternohyoid Manubrium Hyoid bone Depresses larynx and hyoid bone during swallowing Thyrohyoid Thyroid cartilage of larynx Hyoid bone Depresses hyoid bone; elevates larynx Splenius Spinous processes of inferior cervical and superior thoracic vertebrae Mastoid process, occipital bone and transverse processes of superior cervical vertebrae Laterally flexes, rotates, and extends head and neck Scalenes(Posterior, middle, and anterior) Transverse processes of cervical vertebrae First and second ribs Lateral flexion of neck; elevates ribs 1 and 2 during forced inspiration Levator Scapulae Transverse processes of superior four cervical vertebrae Medial border of scapula near superior angle Elevates scapula; inferior rotation of scapula External intercostals Inferior border of superior rib Superior border of inferior rib Elevates the ribs during normal inspiration Internal Intercostals Superior border of inferior rib Inferior border of superior rib Depresses the ribs during forced expiration Rectus Abdominis Pubic crest; pubic symphysis
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