Muscular%20System

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• Muscular System
• Part 1

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Muscular System

• What is the function of the muscular system?
• To help the body move
• To help other systems of the body function
  properly.

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Parts of a Muscle

• Connective Tissue
• Bundle of Fibers (cells)
• Muscle Fiber (cell)
• Actin Myosin Filaments

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• What are Actin and Myosin? (2 3)
• Protein filaments that slide past each other to
  make a muscle cell work.
• What are muscle fibers?
• Muscle cells
• Grouped together to form a muscle
• Covered in connective tissue

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Are muscles living?

• Yes, they need Food (nutrients), Water, Oxygen
  (4)
• They are brought by blood vessels
• They also have nerves telling they when how to
  do their job. (5)

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Why do younger children have less muscle
weight? (9)

• They are not fully developed.

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Body weight practice(MATH)

• Males 42 (0.42) Females 35 (0.35)
• X male or female Y weight
• Female 1 125 lbs
• Female 2 165 lbs
• Male 1 220 lbs
• Male 2 165 lbs
• Equation X Y lbs. of muscles

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How are muscles classified?(1)

• Voluntary

• Involuntary

• You decide if your going to move. (2)
• Ex Walking, sitting, jumping, etc.

• Movement happens on its own.
• It has to happen to maintain normalcy.
• Ex Heart beating, breathing
• Some can be controlled from time to time. (4)
• Ex Blinking, breathing, etc.

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How are muscles classified

• Involuntary

• Voluntary

• Smooth/ Visceral
• Thin, spindles w/ nucleus in middle (8)
• Controlled by autonomous nervous system (7)
• Found in skin, organs, blood vessels (9)

• Skeletal/ Striated
• Has stripes(5)
• Long muscle fibers
• Attach to bone by tendon
• Most in body
• Found in large moving parts arms, legs, hands,
  face (6)

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What type of muscle is the

• Involuntary
• Striated like skeletal muscle but still
  different.
• Made of Cardiac Muscle not found anywhere else in
  the body. (10)

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• Muscular System
• Part 2

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BODY SHAPE

• Frame Skeletal System
• Final Shape Muscular System
• Muscle Tone how muscles look work

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Problems

• Hypertrophy muscles are too big due to over
  use.

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Problems
Atrophy smaller muscles due to lack of use.
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Problems

• Cramps painful muscle contraction

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• Tetanus
• caused by a bacterial infection
• muscle contraction that wont quit
• Lockjaw
• Spasms rapidly repeated contractions

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• Epilepsy
• severe spasms
• Can lead to seizures
• Can be controlled w/ medicine
• Hernia muscle pushes through into another area

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Healthy Muscles

• Good Diet
• Calcium gets muscles going
• Protein Build new repair muscles
• Exercise
• Improves muscle tone
• Aerobic exercise good for heart muscle
• Weight lifting shapes defines large muscle
  groups
• Rest Rebuild

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• Muscular System
• Part 3

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Fitness Chapter 7

• Benefits of Strength
• Reduce fatigue
• Prevent injuries
• Decreases muscle soreness

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Other Vocabulary words

• Principle of Overload
• Principle of Progression
• Principle of Specificity
• Isotonic Exercise
• Isometric Exercise
• Muscle-bound
• Anabolic steroid
• Target Zone
• Repetition