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The Human BodyInteractive PowerPoint
Chapter 6
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• 1st 2 rows Read pages 55-60
• Middle 2 rows Read pages 61-65
• Last 2 rows Read 68-71
• Be ready to explain to the class what you read
Digestive System
Respiratory System
Circulatory System
Muscular System
Skeletal System
Digestive System
Menu Gross & Cool Facts!
Respiratory System
Menu Gross & Cool Facts!
Circulatory System
Menu Gross & Cool Facts!
Muscular System
Menu Gross & Cool Facts!
Skeletal System
Menu Gross & Cool Facts!
Digestive SystemGross and Cool Facts!
• HOW LONG ARE YOUR INTESTINES? At least 25 feet in an adult. Be glad you're not a full-grown horse -- their coiled-up intestines are 89 feet long!
• Chewing food takes from 5-30 seconds • Swallowing takes about 10 seconds • Food sloshing in the stomach can last 3-4 hours • It takes 3 hours for food to move through the intestine • Food drying up and hanging out in the large intestine can
last 18 hours to 2 days! • Americans eat about 700 million pounds of peanut butter. • Americans eat over 2 billion pounds of chocolate a year. • In your lifetime, your digestive system may handle about 50
tons!!
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Respiratory SystemGross and Cool Facts!
• Your lungs contain almost 1500 miles of airways and over 300 million alveoli.
• Every minute you breathe in 13 pints of air. • Plants are our partners in breathing. We breathe
in air, use the oxygen in it, and release carbon dioxide. Plants take in carbon dioxide and release oxygen. Thank goodness!
• People tend to get more colds in the winter because we're indoors more often and in close proximity to other people. When people sneeze, cough and even breathe -- germs go flying!
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Circulatory SystemGross and Cool Facts!
• The body of an adult contains over 60,000 miles of blood vessels!
• An adult's heart pumps nearly 4000 gallons of blood each day!
• Your heart beats some 30 million times a year! • The average three-year-old has two pints of
blood in their body; the average adult at least five times more!
• A "heartbeat" is really the sound of the valves in the heart closing as they push blood through its chambers.
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Muscular SystemGross and Cool Facts!
• You have over 30 facial muscles which create looks like surprise, happiness, sadness, and frowning.
• Eye muscles are the busiest muscles in the body. Scientists estimate they may move more than 100,000 times a day!
• The largest muscle in the body is the gluteus maximus muscle in the buttocks.
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Skeletal SystemGross and Cool Facts!
• Your hand has 27 bones; your face has 14! • The longest bone in your body? Your thigh
bone, the femur -- it's about 1/4 of your height. The smallest is the stirrup bone in the ear which can measure 1/10 of an inch.
• Humans and giraffes have the same number of bones in their necks? Giraffe neck vertebrae are just much, much longer!
• You have over 230 moveable and semi-moveable joints in your body.
• You have 206 bones in your body.
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Review
1. Bones allow movement and protect soft vital organs such as kidneys and brain
2. Bones manufacture all of the body’s blood cells
3. Bone Tissue is extremely fragile
4. Bones become softer as you grow older
5. Osteoporosis is a condition of weak bones which effects elderly people
6. Teenagers should be especially careful to include adequate amounts of calcium in their diets.
7. The way bones and muscles move could be compared to a pulley and a lever.
8. Bone-building cells remain active while the bone-dismantling cells slow down.
9. The humerus is nicknamed the funny bone
10.Knuckle cracking has been linked to arthritis.
11.Muscles are formed in many layers of muscle tissue
12.Muscle that move automatically are called voluntary muscles
13.Voluntary muscles are stronger than involuntary muscles.
14. The muscle of the heart are voluntary but very weak.
15.All voluntary muscles are best suited to fast action.
16.Muscles respond to electrical impulses created by signals from nerve cells.
17.Over-developing particular muscles can actually impair body movement.
18.All muscles are the same
19.Muscles help you digest food.
20.The tongue is the strongest muscle in your body.
Answers to the review
1. True 11. True
2. True 12. False
3. False 13. True
4. False 14. False
5. True 15. False
6. True 16. True
7. True 17. True
8. False 18. False
9. True 19. True
10. False 20. False
