The Muscular System Major Movers and Shakers BIOL 2400 – Anatomy and Physiology 1 Chapter 11

Temporalis O: Temporal fossa I: Coronoid process and   O: Temporal fossa I: Coronoid process and ramus of the mandible A: Elevation of the mandible Click for Answer

Masseter anterior portion of the zygomatic arch I: Angle and the ramus  O: Maxilla and the anterior portion of the zygomatic arch    I: Angle and the ramus of the mandible. A: Elevation of the mandible Click for Answer

Orbicularis oculi O: Medial wall of the orbit   I: Medial wall of the orbit A: Closes the eyelid Click for Answer

Orbicularis oris I: The skin at the corners of the mouth  O: Opening of the mouth    I: The skin at the corners of the mouth A: Closes the mouth Click for Answer

Zygomaticus major O: Zygomatic bone I: The skin at the corners    I: The skin at the corners of the mouth and the orbicularis oris A: Elevates the skin at the corners of the mouth (smiling) Click for Answer

Depressor anguli oris O: Anterior 1/3 of the body of the mandible, lateral to the mental foramen    I: Angle of the mouth A: Draws the angle of the mouth laterally and inferiorly, as in opening the mouth Click for Answer

Supraspinatus O: The supraspinous fossa of the scapula I: The greater tubercle of the humerus A: Weak ABduction of the shoulder joint Click for Answer

Infraspinatus O: The infraspinous fossa of the scapula I: The greater tubercle of the humerus   A: Lateral rotation of the humerus Click for Answer

Teres minor O: Inferior lateral border of the scapula I: The greater tubercle of the humerus A: Lateral rotation of the humerus Click for Answer

Pectoralis minor O: Ribs 3 through 5   I: The coracoid process of the scapula A: Protraction of the scapula Click for Answer

Rhomboid major O: The spinous processes of T2 through T5   I: The vertebral border of the scapula, inferior to the spine A: Retraction of the scapula Click for Answer

Rhomboid minor O: The spinous processes of C7 through T1   I: The vertebral border of the scapula, superior to the spine A: Retraction of the scapula Click for Answer

Levator scapulae O: The transverse processes of C1 through C4   I: The superior angle of the scapula A: Elevation of the scapula Click for Answer