1. Gross Anatomy of the Muscular System
Facial, Trunk and Back Muscles

2. When studying the muscle models
Learn the NAME and LOCATION of the muscle on the model.
Learn the ACTION of the muscle (what action it produces when the muscle contracts)

3. A note on muscle actions…
On the lab exam, you only need to provide ONE action.
The action MUST have an ACTION word and the BONE/BODY part being acted upon.
Example: Acceptable – FLEX ARM
Unacceptable - FLEX

4. Facial Expression Muscles
Epicranius – frontal belly
Orbicularis oculi
Orbicularis oris

5. Facial Expression Muscles
Epicranius - occipital belly
Zygomaticus
Risorius

6. Origin & Insertion Muscles attach at each end to a different bone
ORIGIN: The bone that DOESN’T move when the muscle contracts
INSERTION: The bone that DOES move when the muscle contracts

7. Mastication & Neck Muscles
Temporalis
Masseter
Sternocleidomastoid

8. Torso Muscles – Study on the following 2 models
Shows SUPERFICIAL muscles only!!!
Shows SUPERFICIAL muscles on RIGHT and DEEP muscle on LEFT!!!

9. TORSO MUSCLES – SUPERFICIAL ONLY!!!
Deltoid
Pectoralis major
Serratus Anterior

10. TORSO MUSCLES – SUPERFICIAL ONLY!!!
Rectus abdominis
External oblique

11. TORSO MUSCLES – SUPERFICIAL & DEEP!!!
External intercostals
Internal intercostals

12. TORSO MUSCLES – SUPERFICIAL & DEEP!!!
Deltoid
Pectoralis major
Pectoralis minor
Serratus anterior

13. TORSO MUSCLES – SUPERFICIAL & DEEP!!!
Rectus abdominis
External oblique
Internal oblique

14. BACK MUSCLES – SUPERFICIAL ONLY!!!
Deltoid
Trapezius
Latissimus dorsi

15. BACK MUSCLES – SUPERFICIAL ONLY!!!
Infraspinatus
Teres Minor
Teres Major

16. BACK MUSCLES – SUPERFICIAL ONLY!!!
Infraspinatus
BACK MUSCLES – SUPERFICIAL ONLY!!!
Teres Minor
Teres Major

17. BACK MUSCLES – SUPERFICIAL & DEEP!!!
Supraspinatus
Infraspinatus
Teres Minor
Teres Major

18. BACK MUSCLES – SUPERFICIAL & DEEP!!!
Deltoid
Trapezius
Latissimus dorsi

19. BACK MUSCLES – SUPERFICIAL & DEEP!!!
Infraspinatus
Teres Minor
Teres Major

20. BACK MUSCLES – SUPERFICIAL &
DEEP!!!
Rhomboid Minor
Rhomboid Major