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The Human Body
Did you know that…?• Humans use more than 200 different
muscles to walk.
• Babies have about 300 bones at birth… many fuse together during the process of growing up.
Systems of the Body…
The Circulatory System
The Circulatory System
• Transport system
• The heart = MAJOR ORGAN OF THIS SYSTEM.
• Arteries carry blood away from the heart.
• Veins carry blood to the heart.
The Digestive System
The Digestive System
• Food = gas
• Mouth = where you add gas
• Esophagus = gas pump
• Stomach = gas tank
• Intestines = engine
The Respiratory System
The Respiratory System
The Nervous System
The Nervous System
• The information system that controls everything you do.
• Composed of brain, spinal cord, and nerves.
Skeletal System
• Composed of bones and the tissues that connect them (tendons, ligaments, and cartilage).
Skeletal System
• Did you know that...?
• Hands and feet contain over half of the body’s bones.
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