1. The Human Body Systems Mrs. Davenport 7 th Grade Science

2. The Body Systems We all look different on the outside, what about the inside? If we look at the inside we are pretty much the same. What would we see? __________________________ ___________, all of which are constantly working together, in tissues, organs, organ systems to form an organism YOU!

3. The Human Body Systems Work Together The __________ System The __________ System The __________ System The __________ System The __________ System The __________ System The __________ System

4. The Digestive System

5. The Digestive Tract

6. First Organs of the Digestive Tract The _______ and _____ are the first organs of the _________ tract. The teeth are bones whose main purpose is to ______ food into bits that the body can digest. ________ helps begin to break down food.

7. The Esophagus The ________ runs from the ________ to the ____________. The esophagus is about 25 cm ( 10 inches) long. The esophagus is really a large muscle which pushes food down to the stomach.

8. The Stomach The _________ is a J- shaped muscle. The stomach acts as a ________. Chemical breakdown of food begins in the stomach.

9. The Small Intestine The _____________is the main organ of the of the digestive tract. The small intestine _________ processed food into the bloodstream to deliver to the cells. The unabsorbed food then passes to __________ ___________.

10. The Large Intestine. The ________________ is about 5 feet long. The main job of the large intestine is absorb _________ and to get rid of unwanted materials. When sweet corn turns to poo video

11. Respiratory System

12. Function of the Respiratory System The primary function of the respiratory system is to supply the blood with __________ in order for the blood to deliver oxygen to all parts of the body. The main parts of the Respiratory System are the ________________ ___________________.

13. When you Breathe Did you know that when you breath, air goes through your Respiratory System? The Respiratory System is made up of your ______________ ________________. How lungs work

14. Take Care of Your Respiratory System! Don’t smoke. Smoking damages your Respiratory System. Exercise to strengthen your breathing muscles. If you ever have trouble breathing, tell an adult at once.

15. Smoking Damages Your Lungs Do you smoke? If you smoke this is what your lungs will look like. If you don't smoke this is what your lungs will look like.

16. The Circulatory System

17. Circulatory System The circulatory system consists of the ______ ___________________. The _______ is a muscular organ about the size of a fist. It beats about 70 to 90 times a minute, pumping _______ though the _________vessels.

18. The Heart The heart has two sides, right and left, separated by a thick muscular wall. Each side has two chambers the atria and ventricles. How the heart works

19. The Skeletal System The Skeletal System is made up of bones, ligaments, and tendons.

20. Function of the Skeletal System _________ our vital organs such as the ______, the _______, and the _______. Gives us the shape that we have. Without it, we would just be a _________________ _____ on the floor. Allows us to move. ??? Because our muscles are _________ to our bones, when our muscles move, they move the bones, and we move.

21. How Bones Work Our bones don't work on their own. The bones join together to form ______. The end of each bone is covered by a tough, smooth shiny substance called _________ that works like oil in a car. All of this is so your bones don’t grind and wear away when you move. Our bones are held together by strong stretchy bands called _________. How the skeletal system works

22. The smallest bones in the body are found in the _________. The longest bone in the body is the ______________. The bones are filled with something called _____________ which makes red and white ______________. Over half the body's bones are in the _________ and _______. The only joint-less bone in your body is the ________ bone under your tongue. You have three major types of joints, ______________(shoulder and hip), ____________ (elbow and knee) and ________________(wrist). As your bones grow, you get __________. When you were born, your skeleton had around _____ bones. By the time you become an adult, you will only have around ______ bones. This is because, as you grow, some of the bones join together to form one bone. Interesting Facts

23. The Muscular System There are more than 600 muscles in the human body.

24. The Function of Muscles Muscles help you do almost everything — from pumping ________throughout your body to lifting heavy objects. You control some of your muscles, and others, like your _______, do their jobs without you thinking about them at all.

25. How Muscles Work Muscles work in a very simple way. They work in pairs that when one muscle pulls or ________ while the other ________. Muscles can only____. They never push. Muscles work in ___________ direction from their paired muscle quadriceps and hamstring, triceps and bicep. How Muscles Work

26. The Nervous System The main parts of the Nervous System are the ______________ _____________________.

27. The Nervous System The _________ is the main pathway for information connecting the ______ and ______________or outer most nerves. The human spinal cord is protected by the bony _________column. The spinal column is made up of bones called ____________. How the Nervous System Works

28. Nerves All through our body there are ________ which connect to the spinal cord. This is called the ________ system. Messages from the nerves travel to the spinal cord, which sends them to the ________. The brain works out what the ________ are so we know what we are seeing, touching, hearing, and tasting, and if something hurts or feels. All of our senses report to our brain which signals us how to react to what has happened.

29. The Spinal Cord We each have a _________, called a ____. Inside it there is a _______. The spinal cord joins the ________ at the top of our neck. Its main function is to serve as a pathway for the messages from the nerves to travel to the brain and back so we know what we are seeing, touching, hearing, and tasting, and if something hurts or feels.

30. The Brain Inside our head is the _______. It controls how our bodies work and is protected by the a thick bone called the ________. The _______ makes sure our hearts keep beating and our lungs keep working without us having to think about it. Part of the brain makes our muscles work. The biggest part of the brain makes us think, see, hear, feel and taste. Brain Comic Video

31. The Reproductive System

32. Reproduction The reproductive system contains the gametes from each parent and join together to form the zygote. Gametes= egg from mother and sperm from father. Eggs and sperm are formed during meiosis.