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Muscular System

Muscular System. Frontals Trapezius Deltoid Pectoral Triceps Biceps Abdominals Latissimus Dorsi Sartorius Quadriceps Gluteus Maximus Hamstring Gastrocnemius

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Page 1: Muscular System. Frontals Trapezius Deltoid Pectoral Triceps Biceps Abdominals Latissimus Dorsi Sartorius Quadriceps Gluteus Maximus Hamstring Gastrocnemius

Muscular System

Page 2: Muscular System. Frontals Trapezius Deltoid Pectoral Triceps Biceps Abdominals Latissimus Dorsi Sartorius Quadriceps Gluteus Maximus Hamstring Gastrocnemius

Frontals

Trapezius Trapezius

DeltoidDeltoid

Pectoral

TricepsTriceps

BicepsBiceps

Abdominals

Latissimus Dorsi

Sartorius

Quadriceps

Gluteus Maximus

Hamstring

Gastrocnemius Gastrocnemius

Achilles Tendon

Page 3: Muscular System. Frontals Trapezius Deltoid Pectoral Triceps Biceps Abdominals Latissimus Dorsi Sartorius Quadriceps Gluteus Maximus Hamstring Gastrocnemius

Vocabulary

• Muscular System: the group of tough tissues that make you body parts move.

• Contract: shortening of the muscle

• Extend: lengthening of the muscle

Page 4: Muscular System. Frontals Trapezius Deltoid Pectoral Triceps Biceps Abdominals Latissimus Dorsi Sartorius Quadriceps Gluteus Maximus Hamstring Gastrocnemius

How do muscles work?

• You have over 600 muscles in your body– They all work in pairs– When one contracts the other extends– Describe what happens when you bend and

straighten your arm…• Your bicep pulls on your radius• Your triceps extend• Your triceps pull on your ulna • Your bicep extend

Page 5: Muscular System. Frontals Trapezius Deltoid Pectoral Triceps Biceps Abdominals Latissimus Dorsi Sartorius Quadriceps Gluteus Maximus Hamstring Gastrocnemius

Diagram of a Muscle

Bone

Tendon Muscle BodyMuscle Cell Bundle

Blood Vessel

Muscle Cell

Page 6: Muscular System. Frontals Trapezius Deltoid Pectoral Triceps Biceps Abdominals Latissimus Dorsi Sartorius Quadriceps Gluteus Maximus Hamstring Gastrocnemius

Kinds of Muscle

• Smooth– Can be found in organs

• Stomach• Intestines

– Can NOT be controlled voluntarily. You don’t have to think about moving your food through your digestive tract after you swallow

Page 7: Muscular System. Frontals Trapezius Deltoid Pectoral Triceps Biceps Abdominals Latissimus Dorsi Sartorius Quadriceps Gluteus Maximus Hamstring Gastrocnemius

Kinds of Muscle

• Cardiac – Only found in one place in the body– THE HEART– Controlled by the brain

• Some people after years of training are able to raise and lower their heart rate voluntarily

Page 8: Muscular System. Frontals Trapezius Deltoid Pectoral Triceps Biceps Abdominals Latissimus Dorsi Sartorius Quadriceps Gluteus Maximus Hamstring Gastrocnemius

Kinds of Muscle

• Skeletal– Attached to bone– Allow you to move your body– Skeletal muscles makeup about 40% of your body

weight

Page 9: Muscular System. Frontals Trapezius Deltoid Pectoral Triceps Biceps Abdominals Latissimus Dorsi Sartorius Quadriceps Gluteus Maximus Hamstring Gastrocnemius

Problems with the Muscular System

Problem Description Treatment Pulled or Torn Muscle Muscle tears from

boneRest / Ice for minor

tears

Surgery for major tears

Strain Soreness due to overwork / over

stretched muscle or tendon

Rest / Application of ice and heat in 20 minute intervals

Cramp Muscle contracts and is unable to relax,

most commonly due to lack of water

Drink water / Massage / Application of heat

Page 10: Muscular System. Frontals Trapezius Deltoid Pectoral Triceps Biceps Abdominals Latissimus Dorsi Sartorius Quadriceps Gluteus Maximus Hamstring Gastrocnemius

Problems with the Muscular System

Problem Description Treatment

Tendonitis Overstretched or torn tendon

Rest and ice for minor surgery for major

Muscular Dystrophy And inherited disorder in which the muscles become weaker over time and eventually

the person is no longer able to walk or

stand

No cure