IUPUI BIOL N261 CORE MAIN QUESTIONS AND
ANSWERS SURE A+
✔✔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
✔✔Linea alba - ✔✔Verically divides the right and left side of rectus abdominis
✔✔Tendinous intersections - ✔✔Small connective tissue bands which run horizontally
across rectus abdominis
✔✔The 5 hip lateral rotator muscles - ✔✔-Piriformis
-Gemellus superior
-Orbturator internus
-Gemellus inferior
-Quadratus femoris
✔✔Brachialis - ✔✔Flexes forearms
ANSWERS SURE A+
✔✔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
✔✔Linea alba - ✔✔Verically divides the right and left side of rectus abdominis
✔✔Tendinous intersections - ✔✔Small connective tissue bands which run horizontally
across rectus abdominis
✔✔The 5 hip lateral rotator muscles - ✔✔-Piriformis
-Gemellus superior
-Orbturator internus
-Gemellus inferior
-Quadratus femoris
✔✔Brachialis - ✔✔Flexes forearms
