1. By: Caitlyn Hughes
Muscle Movement

2. What is the main movement of the platysma?
Tenses the skin of neck

3. What is the main movement of the serratus anterior?
Rotates the scapula so that the interior angle moves laterally and upward

4. What is the main movement of the orbicularis oris?
Closes lips

5. What is the major movement of the pectoralis minor?
Draws the scapula forward and downward

6. What is the main movement of the temporalis?
Closes jaw

7. What is the major movement of the sternohyoid?
Depresses larynx and hyoid bone if the mandible is fixed

8. What is the major movement of the orbicularis oculus?
Closes eye

9. What is the major movement of the sternocleidomastoid?
Flexes and laterally rotates head

10. What is the major movement of the pectoralis major?
Major flexor of the arm, performs medial arm rotation, adducts arm

11. What is the major movement of the intercostal muscles?
Internal: Draws ribs together and depresses rib cage (expiration)
External: Pulls ribs towards one another and elevates rib cage (inspiration)

12. What is the major movement of the latissimus dorsi?
Arm extensor, arm adductor, medial rotation at shoulder

13. What is the major movement of the rectus abdominus?
Flex and rotate lumbar region of spine

14. What are the major movements of the internal and external obliques?
Flex spine and compress abdominal wall

15. What is the major movement of the triceps brachii?
Forearm extension

16. I don’t feel like typing the whole question anymore so I hope you guys get the point

17. Vastus lateralis
Extends and stabilizes knee

18. Brachioradialis
Synergist in forearm flexion

19. Semimembranosus
Extends thigh, flexes knee

20. Biceps brachii
Flexes elbow joint and supinates forearm

21. Soleus
Plantar flexion

22. Deltoid
Arm abduction

23. Teres major
Extends, medially rotates, and adducts humerus

24. Gluteus maximus
Major thigh extensor

25. Trapezius
Stabilizes, raises, retracts, and rotates scapula

26. Tibialis anterior
Dorsiflexion

27. Sartorius
Flexes, abducts, and laterally rotates thigh; flexes knee

28. Brachialis
Forearm flexion

29. Fibularis longus
Planter flexion, foot eversion

30. Supraspinatus
Initiates abduction

31. Biceps femoris
Extends thigh, flexes knee

32. Flexor carpi radialis
Wrist flexor, abducts hand

33. Infraspinatus
Rotates humerus laterally

34. Adductor longus
Adducts, flexes, and medially rotates thigh

35. Gracilis
Flexes and medially rotates leg; adducts thigh

36. Vastus medialis
Extends knee

37. Semitendinosus
Extends thigh, flexes knee

38. Gluteus medius
Abducts and medially rotates thigh

39. Extensor digitorum longus
Toe extension

40. Diaphragm
Breathing

41. Gastrocnemius
Plantar flexion