IUPUI BIOL N261 COMPREHENSIVE QUESTIONS AND
ANSWERS SURE A+
✔✔Sternocleidomastoid - ✔✔Rotates and flexes head
✔✔Sternohyoid - ✔✔Depresses hyoid
✔✔Sternothyroid - ✔✔Depresses thyroid cartilage
✔✔Omohyoid (superior and inferior belly) - ✔✔Depresses hyoid
✔✔Platysma - ✔✔Depresses lower lip, opens jaw
✔✔Digastric (anterior and posterior belly) - ✔✔Elevates, protracts, retracts hyoid; opens
mandible
✔✔Frontalis - ✔✔Raises eyebrows, draws scalp anteriorly
✔✔Occipitalis - ✔✔Draws scalp posteriorly
✔✔Temporalis - ✔✔Closes mandible
✔✔Masseter - ✔✔Closes mandible
✔✔Orbicularis oculi - ✔✔Closes eyelid
✔✔Orbicularis oris - ✔✔Closes lips
✔✔Mentalis - ✔✔Protrudes lower lip
, ✔✔Risorius - ✔✔Abducts corner of mouth (draws edge of mouth lateral)
✔✔Buccinator - ✔✔Compresses cheek
✔✔Zygomaticus major - ✔✔Elevates corners of mouth (in smiling and laughing)
✔✔External abdominal oblique - ✔✔Compresses abdominal wall, laterally rotates trunk
✔✔Internal abdominal oblique - ✔✔Compresses abdominal wall, laterally rotates trunk
✔✔Transversus abdominis - ✔✔Compresses abdominal wall, laterally rotates trunk
✔✔Rectus abdominis - ✔✔Flexes vertebral column, compresses abdominal wall
✔✔The 4 ab muscles - ✔✔-External abdominal oblique
-Internal abdominal oblique
-Transversus abdominis
-Rectus abdominis
✔✔Serratus anterior - ✔✔Abducts scapula, rotates scapula to elevate shoulder
✔✔External intercostals - ✔✔Elevates ribs (increases volume in thorax)
✔✔Internal intercostals - ✔✔Depresses ribs (decreases volume in thorax)
✔✔The erector spinae (I love spagetti) muscles - ✔✔-Iliocostalis
-Longissimus
-Spinalis
✔✔Iliocostalis - ✔✔Extends and rotates vertebral column and head
✔✔Longissimus - ✔✔Extends and rotates vertebral column and head
✔✔Spinalis - ✔✔Extends and rotates vertebral column and head
✔✔Rhomboideus major - ✔✔Adducts scapula (draws scapulae together)
✔✔Rhomboideus minor - ✔✔Adducts scapula (draws scapulae together)
✔✔Splenius - ✔✔Extends and rotates head
✔✔Rectus sheath - ✔✔Encloses the abdominal muscles
ANSWERS SURE A+
✔✔Sternocleidomastoid - ✔✔Rotates and flexes head
✔✔Sternohyoid - ✔✔Depresses hyoid
✔✔Sternothyroid - ✔✔Depresses thyroid cartilage
✔✔Omohyoid (superior and inferior belly) - ✔✔Depresses hyoid
✔✔Platysma - ✔✔Depresses lower lip, opens jaw
✔✔Digastric (anterior and posterior belly) - ✔✔Elevates, protracts, retracts hyoid; opens
mandible
✔✔Frontalis - ✔✔Raises eyebrows, draws scalp anteriorly
✔✔Occipitalis - ✔✔Draws scalp posteriorly
✔✔Temporalis - ✔✔Closes mandible
✔✔Masseter - ✔✔Closes mandible
✔✔Orbicularis oculi - ✔✔Closes eyelid
✔✔Orbicularis oris - ✔✔Closes lips
✔✔Mentalis - ✔✔Protrudes lower lip
, ✔✔Risorius - ✔✔Abducts corner of mouth (draws edge of mouth lateral)
✔✔Buccinator - ✔✔Compresses cheek
✔✔Zygomaticus major - ✔✔Elevates corners of mouth (in smiling and laughing)
✔✔External abdominal oblique - ✔✔Compresses abdominal wall, laterally rotates trunk
✔✔Internal abdominal oblique - ✔✔Compresses abdominal wall, laterally rotates trunk
✔✔Transversus abdominis - ✔✔Compresses abdominal wall, laterally rotates trunk
✔✔Rectus abdominis - ✔✔Flexes vertebral column, compresses abdominal wall
✔✔The 4 ab muscles - ✔✔-External abdominal oblique
-Internal abdominal oblique
-Transversus abdominis
-Rectus abdominis
✔✔Serratus anterior - ✔✔Abducts scapula, rotates scapula to elevate shoulder
✔✔External intercostals - ✔✔Elevates ribs (increases volume in thorax)
✔✔Internal intercostals - ✔✔Depresses ribs (decreases volume in thorax)
✔✔The erector spinae (I love spagetti) muscles - ✔✔-Iliocostalis
-Longissimus
-Spinalis
✔✔Iliocostalis - ✔✔Extends and rotates vertebral column and head
✔✔Longissimus - ✔✔Extends and rotates vertebral column and head
✔✔Spinalis - ✔✔Extends and rotates vertebral column and head
✔✔Rhomboideus major - ✔✔Adducts scapula (draws scapulae together)
✔✔Rhomboideus minor - ✔✔Adducts scapula (draws scapulae together)
✔✔Splenius - ✔✔Extends and rotates head
✔✔Rectus sheath - ✔✔Encloses the abdominal muscles
