1. Prime Movers actively produce movement. Antagonists are in opposition to the prime movers. Synergists contract simultaneously with the prime mover to help execute a movement or steady a part.

2. ACTION ORIGIN/INSERTION _________?(EXTERNAL OBLIQUE) DIRECTION OF FIRBERS.(_______) BI-, TRI, QUAD.(________)SECTIONS PYRAMIDAL(_______).

4. Facial muscles There are many facial muscles that produce a variety of movement.

5. Orbicularis oculi

6. Masseter

7. Muscles of the neck, back & thorax These muscles assist in rotation of the head, flexion and extension of the head on the neck, breathing, and attachment of the forelimbs to the body.

8. Serratus muscle group Important for respiration and supporting the trunk in quadruped species.

9. Pectoral muscle group Forms chest Adducts forelimb

10. Latissimus dorsi Supports forelimb Aids in flexion of shoulder Broadest muscle in back

13. external intercostals lift the ribs INHALATION internal intercostals lower the ribs EXPERATION contracting relaxing DIAPRHAGM

15. Muscles of the forelimbs: in addition to the back and upper thorax, the muscles of the upper forelimbs contribute to the movement of the distal extremities. Includes: triceps brachii and biceps brachii

16. Triceps Triceps extend forelimbs

17. Biceps Biceps flex the forelimbs

18. Abdominal muscles: external oblique internal oblique rectus abdominis transversus abdominis These muscles keep the organs in place, support and compress the abdomen, and contract during parturition, defecation, urination and coughing.

19. ABDOMINAL MUSCLES _______ ______________ _____ ________

20. Rectus abdominis External oblique Internal oblique Transversus abdominis

21. Abdominal muscles also assist in rotating the vertebral column. The linea alba is a fibrous band that runs the length of the center of the abdomen and is the central attachment of the abdominal muscles. This is a very important landmark for any abdominal surgery.

22. Linea alba

23. Muscles of the hind limb These muscles have several functions (flexion, extension, abduction, adduction). The most important muscle groups include: *gluteal group *quadricep group *semi group

24. gluteal

25. Quadriceps

26. Semi group (hamstrings)

28. Miscellaneous muscles: *arrector pili* These are smooth muscles attached to hair on the dorsum. When stimulated these muscles raise the hair on the back.

30. Cutaneous trunci: a muscle that attaches to the dermis and controls the insect twitch in large animals Another large animal muscle is the cremaster, this muscle is part of the spermatic cord and attaches to the scrotum. This muscle contracts and relaxes, raising and lowering the testicles. This movement helps to regulate testicular temperature.

31. CUTANEOUS TRUNCI VIDEO:TRUNCI CUTANEOUSCUTANEOUS TRUNCI VIDEO: