Chapter 11 Lab Assignment - Skeletal Muscle labeling.docx -...

This preview shows page 1 - 3 out of 7 pages.

Chapter 11 Lab Assignment – Skeletal MusclesName:_________Instructions:Using the etext, PowerPoint, and/or other resources label theSkeletal Musclesand theiractionson the following pictures.Make sure to verify correct spelling and be as specific as possible.Once you havelabeled the images, you may scan it or take pictures of each page and submit the files to the assignment.Head and Neck Muscles:Raises (elevates) upper lip, exposing maxillary (upper)teeth.Elevates and retracts mandible.Raises upper lip.Depresses (lowers) lower lip.Depressor labii inferiorisDraws angle of mouth laterally and inferiorly, as in opening mouth.Depressor anguli orisDraws outer part of lower lip inferiorly and posteriorly as inpouting; depresses mandible.PlatysmaDraws angle of mouth superiorly and laterally as in smiling.Zygomaticus majorCloses eye.Zygomaticus minor.Levator labii superiorDraws scalp anteriorly, raises eyebrows, and wrinklesskin of forehead horizontally as in look of surprise.Orbicularis oculiTemporalisOccipitofrontalis (frontal belly)Muscle:Action:Muscle:Action:Muscle:Action:Muscle:Action:Muscle:Action:Muscle:Action:Muscle:Action:Muscle:Action:Muscle:Action:Superficial Muscles
Thoracic and Abdominal Muscles:Acting together (bilaterally), flex cervical portion of vertebral column, extend head at atlanto-occipital joints; acting singly (unilaterally), laterally flex neck and head to same side and rotate headto side opposite contracting muscle. Laterally rotate and flex head to opposite side of contractingmuscle. Posterior fibers of muscle can assist in extension of head. RMA: Elevate sternum duringforced inhalation.SternocleidomastoidCloses and protrudes lips, as in kissing; compresses lipsagainst teeth; and shapes lips during speech.Elevates mandible, as in closing mouth.MasseterBuccinatorPresses cheeks against teeth and lips, as in whistling, blowing, and sucking; draws cornerof mouth laterally; and assists in mastication by keeping food between the teeth.Levator palpebrae superiorisElevates upper eyelids (opens eyes).Elevates and protrudes lower lip and pulls skin of chin up, as inpouting.MentalisOrbicularis oris.

Upload your study docs or become a

Course Hero member to access this document

Upload your study docs or become a

Course Hero member to access this document

End of preview. Want to read all 7 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Fall
Professor
N/A
Tags
Deltoid muscle, joints, Muscles of the upper limb

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture