Chapter 11 - Lab

• epicranius


  elevates eyebrows
• procerus 


  moves and wrinkles nose
• frontalis 


  elevates eyebrows
• orbicularis oculi


  closes eye
• zygomaticus major


  elevates the corner of the mouth
• buccinator


  compresses the cheek
• orbicularis oris 


  compresses and protrudes lips
• depressor anguli oris 


  depresses corner of mouth
• mentalis


  protrudes lower lip
• temporalis


  elevates mandible
• masseter


  elevates mandible
• genioglossus


  protrude and depresses tongue
• digastric anterior belly


  depresses mandible, elevates hyoid
• digastric posterior belly


  depresses mandible, elevates hyoid
• mylohyoid


  elevates hyoid
• omohyoid


  depresses hyoid
• sternohyoid

  depresses hyoid
• platysma


  depresses mandible, frown
• sternocleidomastoid

  bilateral: flexes neck

  unilateral: contralateral

  rotation, ipsilateral lat flex
• scalenes, anterior, middle and posterior


  flexes neck, elevates ribs
• semispinalis capitis


  extends neck
• splenius capitis


  extends neck
• erector spinae

  spinalis

  longissimus

  iliocostalis


  extends vertebral column
• mutlifidus


  extends & contraalateral rot vertebral column
• quadratus lumborum

  extends vererbral column
• external intercostals


  elevates ribs
• internal intercostals


  depresses ribs
• innermost intercostals


  depresses ribs
• transverse intercostals 


  depresses ribs
• diaphram


  expands thoracic cavity
• rectus abdominis


  flexes vertebral column, rotates pelvis
• external abdominal oblique 


  flexes & rotates vertebral column
• internal abdominal oblique 


  flexes and rotates vertebral column
• transverse abdominis


  retracts abdominal wall and flexes vertebral column