1. The Muscular System Week 6 Seminar Presented by Dr. Carlene Graham

2. SKELETAL MUSCLE GROUPS 2Dr. C. Graham10/19/2015

3. Muscles of the Head and Neck  Provide facial expressions Raising the eyebrows Closing an eye Puckering the lips  Assisting with chewing movement  Flex, extend, and rotate head and shoulders 3Dr. C. Graham10/19/2015

4. Dr. C. Graham4 Facial Muscles See page 169

5. Muscle groups upper body Anterior  Pectoralis major  Deltoid  Bicep brachii 5Dr. C. Graham10/19/2015

6. Muscle groups upper body Posterior  Latissimus brachii  Triceps brachii 6Dr. C. Graham10/19/2015

7. Muscles of the trunk  External oblique  Rectus abdominis  Internal oblique  Serratus  Transverse abdominis 7Dr. C. Graham10/19/2015

8. Muscles of the lower extremities AnteriorPosterior  Vastus lateralis  Fibularus longus & brevis  Vastus medialis  Pectineus  Rectus femoris  Tibialis anterior  Lliopsoas  Adductor longus  Sartorius  Gluteus maximus  Semimembranosus  Gracillis  Semitendinous  Adductor magnus  Gastrocnemius  Bicep femoris  Soleus 8Dr. C. Graham10/19/2015

9. Dr. C. Graham9

10. Muscle Names - Size  Vastus — means huge (vast)  Maximus – means large (maximum)  Minimus – means small (minimum Can you name any muscle group with these names? 10Dr. C. Graham10/19/2015

11. Vastus,Maximus & Minimus  The Vastus lateralis is the largest part of the Quadriceps femoris. (page 166)Quadriceps femoris  Gluteus maximus larges tof the gluteal muscles  The gluteus minimus, the smallest of the three gluteal muscles, is situated immediately beneath the gluteus medius.gluteal musclesgluteus medius 10/19/2015Dr. C. Graham11

12. VASTUS MUSCLES 10/19/2015Dr. C. Graham12

13. Muscle Names – Shape  Deltoid – means Triangular (see page 167, shoulder muscle)  Latissimus – means wide (see page 167) 13Dr. C. Graham10/19/2015

14. Muscle Name–Direction of fibers  Rectus – means straight (rectus abdominis, “6-pack” in the abdomen – page 166).  Transverse – means across – (sternocleidomastoid – page 169)  Oblique – means diagonal (external abdominal oblique, page 167).  Circularis – means circular (orbicularis occuli and orbicularis oris, page 169). 14Dr. C. Graham10/19/2015

15. Muscle name - Location  Pectoralis – means chest Pectoralis major  Gluteus – means buttock Gluteus maximus  Brachii – means arm Biceps brachii & Triceps brachii See pages 166 & 167 15Dr. C. Graham10/19/2015

16. Muscle name – Number of origin  Biceps (bi means 2) anchored to 2 sites.  Tricep (tri means 3) anchored to 3 sites.  Quadriceps (quad means 4) anchored to 4 sites 16Dr. C. Graham10/19/2015

17. Muscle name - Action  Abductor – moves away from the midline The abductor pollicis brevis is a muscle in the hand that functions as an abductor of the thumb.thumb 17Dr. C. Graham10/19/2015

18. Muscle name - Action Adductor – moves toward midline 18Dr. C. Graham10/19/2015

19. Muscle name - Action Flexor –means muscle flexes a limb. Example: Opening and closing the fist. 19Dr. C. Graham10/19/2015

20. Muscle name - Action  Extensor –means muscle extends a limb. Example: Extending your arms over your head. 20Dr. C. Graham10/19/2015

21. Muscle name - Action  Elevator – means muscle lifts a limb. For example:The Mandibular elevator muscle of the jaw that facilitates chewing. ACTIVITY: Pinch your upper lip (just below your nose) and pull upward. That was another elevator muscle! 21Dr. C. Graham10/19/2015

22. FUNCTIONS OF SKELETAL MUSCLES 22Dr. C. Graham10/19/2015

23. MOVEMENT Skeletal movement is produced by muscular contraction and is voluntary, involving:  The prime mover that is responsible for producing a particular movement.  In synergy (combination with) with the prime mover to produce movement.  As an antagonist working in opposition with the prime mover and synergist. 23Dr. C. Graham10/19/2015

24. POSTURE/MUSCLE TONE  It is normal for the muscles to retain a partial state of contraction.  This enables the body part to remain in the position that favors proper function. 24Dr. C. Graham10/19/2015

25. Maintenance of body Temperature Most of the heat necessary to maintain the body temperature comes from the heat produced when the muscle fiber contracts. 25Dr. C. Graham10/19/2015