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Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

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Page 1: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Congress Middle School

Pre-Medical Magnet Program

2008

Presented by: Diana Herec, Medical Magnet Coordinator

Page 2: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Human Anatomy & Physiology

The Muscular System

Page 3: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Responsible for bodily movement

Includes the voluntary muscles of the body

About 700 muscles in the human body

Vary greatly in size

Page 4: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Muscle Action

Muscle action depends on its position with the joint it works on

Limb movement requires the teamwork of several muscles

Muscles contract when activated

Page 5: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Muscle Contraction

If the force of a muscle contraction is greater than the force resisting it, the contraction is known as

Isotonic Contraction

Page 6: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

muscle contraction continued…

If resistance to contraction is equal to the force, the muscle will not contract, known as:

Isometric Contraction

Page 7: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Skeletal Muscle

Most prominent type of muscle in the body

May account for up to 60% body mass

It is attached to bones at both ends by tendons

Page 8: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Skeletal Muscle continued…

Skeletal muscle is under constant control, therefore, known as:

Voluntary Muscle

Page 9: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Just below the surface of the skin

The muscles and skeleton

are responsible foran individual’s

Physique

Page 10: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Muscle Types

Classified by shape:

Parallel fibers Oblique fibers

Shape and arrangement of fibers reflect muscle function

Page 11: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Pennate Muscles

Have feather-like appearance and fibers run obliquely down to the tendon

Page 12: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Some spiral muscles have the capacity to turn half a rotation between their attachments

Page 13: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Others twist around a bone

Page 14: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

In the common spindle-shaped muscles, all fibers run from one tendon to another

Page 15: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Circular Muscles

Fibers of circular muscles are arranged in concentric circles

Page 16: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Muscles consist of bundles of fibers that can be organized in different ways, according to the function of the muscle

Page 17: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Muscles You Will Need To Know

1. Temporalis2. Masseter4. Sternocleidomastoid5. Pectoralis Major6. Serratus Anterior7. External Obliques24. Rectus Abdominus27. Biceps28. Deltoid29. Trapezius32. Frontalis

Page 18: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Name 1,2, 4, 5, 6, 7, 24, 27, 28, 29, 32

1. Temporalis2. Masseter4. Sternocleidomastoid5. Pectoralis Major6. Serratus Anterior7. External Obliques24. Rectus Abdominus27. Biceps28. Deltoid29. Trapezius32. Frontalis

Page 19: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

You Will Need to Know

14. Adductor Magnus

15. Sartorius

17. Soleus

18. Gastrocnemius

20.Tibialis Anterior

21. Quadriceps

Page 20: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Name #14, 15, 17, 18, 20, 21

14. Adductor Magnus

15. Sartorius

17. Soleus

18. Gastrocnemius

20.Tibialis Anterior

21. Quadriceps

Page 21: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

You Will Need to Know

2. Trapezius3. Deltoid4. Latissimus Dorsi7. Gluteus Maximus9. Gastronemius11. Soleus15-17 Hamstrings22. Tricep

Page 22: Congress Middle School Pre-Medical Magnet Program 2008 Presented by: Diana Herec, Medical Magnet Coordinator

Name #2, 3, 4, 7, 9, 11, 15-17, 22

2. Trapezius3. Deltoid4. Latissimus Dorsi7. Gluteus Maximus9. Gastronemius11. Soleus15-17 Hamstrings22. Tricep