Warm-Up Pick up the notes pack from the side desk and complete the warm-up What are the three sides of the health triangle? What is the target heart range? What is the target ceiling? What is the threshold of training?

Game Plan Today … “The Muscular System” 1.Notes on the Muscular System 2.Major Muscles!!! 3.Muscle activity lab 4.Common Problems 5.Care of the System

MUSCLE FACTS: There are 630 active muscles in your body and they act in groups. Muscles are bundles of cells and fibers.

The Muscular System allows for voluntary and involuntary movements. Can you think of an involuntary movement???

Your heart beating or your digestive track working!

MUSCLE FACTS: Muscles work in a very simple way. All they do is tighten up - that is, contract - and relax. You have two sets of muscles attached to many of your bones which allow them to move.

3 Types of Muscles Smooth Muscles Skeletal Muscles Cardiac Muscles which are found on the walls of internal organs which help strengthen the body and connect to bones. is found only in the heart Stomach, small and large intestine Quadriceps, biceps, triceps, etc. Heart

BASIC MOVEMENTS FLEXION – CLOSE A JOINT EXTENSION – OPEN A JOINT ABDUCTION – MOVE AWAY FROM THE MIDLINE ADDUCTION – MOVE TOWARD THE MIDLINE PRONATION – TURN FACE DOWN SUPINATION – TURN FACE UP DORSI FLEXION – TOES CLOSER TO SHIN PLANTAR FLEXION – TOES AWAY FROM SHIN

Types of Muscle Fiber Fast Twitch – Anaerobic in nature – Short burst activity Slow Twitch – Aerobic in nature – Long-term activity Intermediate Twitch – Can be “trained” to work as one of the above categories

Magic School Bus Flexes its Muscles Part 1 (12:57) TrE TrE Part 2 (12:57) cE cE Full Feature (25:53) Y4 Y4

Muscle Lab… NumberActivity DescriptionMuscles Used 1Shrug your shoulders 2Arms up… pull them down 3 Using your arms… push yourself up from your desk 4Laugh 5Tippy Toes 6Hold a book… pull it to your chest 7Raise your hands 8Stand up/ Sit down(2 muscles) MUSCLES: Gastrognemius Quadriceps Hamstrings Rectus Abdominus Deltoid Biceps Triceps Trapezius Latissimus Dorsi Directions: Perform the activities and write what muscles are used to perform each exercise.

1. Trapezius Action: shrugs your shoulders “IDK muscle”

2. Latissimus dorsi Action: pulls your arms down “Wings” or “tickle muscles”

3. Triceps (back of arm) Action: extends your arms

4. RECTUS ABDOMINIS Action: flexes and extends your core

Calf muscle 5. GASTROGNEMIUS (action: extends foot… “ballet muscle”)

6. Biceps Action: flexes your arms

7. Deltoid Action: moves your shoulders

8A. QUADRICEPS Action: straightens leg

8B. HAMSTRINGS Action: curls your leg

How to care for your muscles… Get regular exercise Eat high protein foods to build muscle Practice good posture to strengthen back muscles Use proper equipment and wear appropriate clothing during activity Warm up properly and stretch before exercising and cool down after to prevent injury.

How does physical activity affect our muscles? Overload and muscle soreness – Muscles “tear” each time you work them – They repair themselves and are then stronger Rest requirements – 24 – 48 hours depending upon the amount of stress placed upon them

Muscular Problems Bruises: broken blood vessels under the skin due to direct blow from a blunt object Muscle strains (muscles are stretched or partially torn) Tendinitis: inflammation of a tendon Hernia: when an organ or tissue protrudes through an area of weak muscle (usually in abdomen) Muscular dystrophy: an inherited disorder in which skeletal muscle fibers are progressively destroyed.

MUSCULAR DYSTROPHY muscular-dystrophy-health-byte/ muscular-dystrophy-health-byte/

Extraordinary Muscles (45.00) NGC investigates the science of muscle by taking us on a journey inside the bodies of two remarkable humans with startling genetic conditions. 31-year old Jason Dunn lives with Dystonia, a rare disorder that causes his brain to send faulty messages to his muscular system. Every waking moment his muscles flex out of his control, twisting his body into unusual positions. Ami Ankileweitz has Spinal Muscle Atrophy, a condition that has caused his muscles to wither away.