Anatomy and Physiology- Muscles
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1. Obicularis oculi Closes eyelid
2. Zygomaticus major Draws angles of the mouth upward and outward; major muscle used in
smiling and laughing
3. Obicularis oris Which muscle encircles the mouth, closes lips, protrudes lips as in
kissing, and is uniquely developed in humans for speech
4. Buccinator Muscles that compresses cheeks inward; whistling or kissing.
5. Mentalis Protrudes lower lip
6. Masseter Elevates mandible
7. Temporalis Elevates and retracts mandible; assists in side to side movement of
mandible
8. Genioglossus Protracts and depresses tongue
9. Styloglossus Retracts and elevates tongue
10. Stylohyoid Elevates and retracts hyoid bone
11. Sternocleidomastoid Contraction of one side: laterally flexes neck, rotates head to opposite
side; Contraction of both sides together: flexes neck
12. Trapezius Elevates, depresses, retracts, and rotates the scapula; rotates the arm
13. Latissimus dorsi Extends, adducts, and medially rotates the arm; draws the shoulder
downward and backward
14. Pectoralis major Adducts and medially rotates the arm; flexes and extends humerus
15. Pectoralis minor
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Study online at https://quizlet.com/_jpbo5t
1. Obicularis oculi Closes eyelid
2. Zygomaticus major Draws angles of the mouth upward and outward; major muscle used in
smiling and laughing
3. Obicularis oris Which muscle encircles the mouth, closes lips, protrudes lips as in
kissing, and is uniquely developed in humans for speech
4. Buccinator Muscles that compresses cheeks inward; whistling or kissing.
5. Mentalis Protrudes lower lip
6. Masseter Elevates mandible
7. Temporalis Elevates and retracts mandible; assists in side to side movement of
mandible
8. Genioglossus Protracts and depresses tongue
9. Styloglossus Retracts and elevates tongue
10. Stylohyoid Elevates and retracts hyoid bone
11. Sternocleidomastoid Contraction of one side: laterally flexes neck, rotates head to opposite
side; Contraction of both sides together: flexes neck
12. Trapezius Elevates, depresses, retracts, and rotates the scapula; rotates the arm
13. Latissimus dorsi Extends, adducts, and medially rotates the arm; draws the shoulder
downward and backward
14. Pectoralis major Adducts and medially rotates the arm; flexes and extends humerus
15. Pectoralis minor
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