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Ss Chapter 13.3
Ss Chapter 13.3
Ss Chapter 13.3
Ss Chapter 13.3
Ss Chapter 13.3
Ss Chapter 13.3
Ss Chapter 13.3
Ss Chapter 13.3
Ss Chapter 13.3
Ss Chapter 13.3
Ss Chapter 13.3
Ss Chapter 13.3
Ss Chapter 13.3
Ss Chapter 13.3
Ss Chapter 13.3
Ss Chapter 13.3
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Ss Chapter 13.3

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  • 1. Chapter 13 Human Life and Health Energy Systems GEE Science Summer Remediation Mr. Nash Donnie Bickham Middle School Room 204
  • 2. Energy Systems <ul><li>Three different body systems that allow us to meet our energy requirements: </li></ul><ul><ul><li>Digestive </li></ul></ul><ul><ul><li>Circulatory </li></ul></ul><ul><ul><li>Respiratory </li></ul></ul>Pg. 233
  • 3. Digestive System <ul><li>Composed several organs that process food by breaking it down into biomolecules. </li></ul><ul><li>Begins in the mouth where teeth break food down mechanically into smaller particles. </li></ul><ul><li>Saliva is mixed in. </li></ul><ul><ul><li>Saliva contains enzymes to begin the breakdown of carbohydrates. </li></ul></ul>Pg. 233
  • 4. Digestive System <ul><li>Once swallowed, food moves into the esophagus moving to the stomach using peristalsis. </li></ul><ul><ul><li>Peristalsis is involuntary muscle movement. </li></ul></ul><ul><li>Movement of the stomach continues the breakdown process using gastric juices. </li></ul><ul><li>Gastric juices are a mix of mucus, water, enzymes, and acid. </li></ul>Pg. 233
  • 5. Digestive System <ul><li>After the stomach, the small intestine begins the absorption of nutrients into the bloodstream. </li></ul><ul><li>Pancreas secretes pancreatic enzymes help digest carbohydrates and proteins. </li></ul><ul><li>Liver produces bile that breaks down fats. </li></ul>Pg. 233
  • 6. Digestive System <ul><li>After the small intestine, all undigested materials and water move to the large intestine. </li></ul><ul><li>Water is reabsorbed by the body and waste product is expelled. </li></ul>Pg. 233
  • 7. Circulatory System <ul><li>Circulatory is the transport system of most substances. </li></ul><ul><li>The heart is the pump of the circulatory system. </li></ul><ul><li>The heart is located between the lungs and is composed of cardiac muscle. </li></ul>Pg. 233
  • 8. Circulatory System <ul><li>The heart collects deoxygenated blood from the body and pumps it to the lungs. </li></ul><ul><li>In the lungs, blood is oxygenated and then pumped back through the heart and out to the body. </li></ul>Pg. 233
  • 9. Circulatory System <ul><li>Arteries pump oxygenated blood away from the heart. </li></ul><ul><li>Veins carry deoxygenated blood back to the heart. </li></ul><ul><ul><li>Veins do not have a pump to move blood through them and rely on skeletal muscle contractions to move blood. </li></ul></ul>Pg. 233
  • 10. Circulatory System <ul><li>Blood consists of four parts: </li></ul><ul><ul><li>Erythrocytes </li></ul></ul><ul><ul><li>Leukocytes </li></ul></ul><ul><ul><li>Platelets </li></ul></ul><ul><ul><li>Plasma </li></ul></ul><ul><li>Erythrocytes are the red blood cells. </li></ul><ul><ul><li>Hemoglobin in the red blood cells allow them to transport oxygen and nutrients. </li></ul></ul>Pg. 234
  • 11. Circulatory System <ul><li>Leukocytes are white blood cells. </li></ul><ul><li>Leukocytes help the immune system fight off infections in the body. </li></ul><ul><li>Platelets are blood cell fragments that help repair damaged vessels. </li></ul>Pg. 234
  • 12. Circulatory System <ul><li>Plasma is the liquid portion of the blood that contains: </li></ul><ul><ul><li>Water </li></ul></ul><ul><ul><li>minerals </li></ul></ul><ul><ul><li>Hormones </li></ul></ul><ul><ul><li>Vitamins </li></ul></ul><ul><ul><li>Naturally and artificially occurring substances. </li></ul></ul>Pg. 234
  • 13. Respiratory System <ul><li>Respiration is the movement of air in and out of the lungs. </li></ul><ul><li>External respiration is the exchange of gases between the air breathed in and the blood. </li></ul><ul><li>Internal respiration is the exchange of oxygen and carbon dioxide gases between body cells and blood. </li></ul>Pg. 234
  • 14. Respiratory System <ul><li>External respiration takes place when we breathe in during a process called respiration. </li></ul><ul><li>Air is taken in through the mouth and nose where it is warmed traveling to the lungs. </li></ul><ul><li>The trachea is a tube passing from the mouth to the lungs. </li></ul>Pg. 235
  • 15. Respiratory System <ul><li>The trachea is also called the windpipe. </li></ul><ul><li>Air then flows from the trachea to the bronchial tubes to the lungs. </li></ul><ul><li>In the lungs the air oxygen and carbon dioxide exchange takes place in the alveoli. </li></ul>Pg. 235
  • 16. Respiratory System <ul><li>Breathing out is expiration. </li></ul><ul><li>Air follows the same path as inspiration, except backwards. </li></ul><ul><li>To breathe, we use the diaphragm. </li></ul><ul><li>The diaphragm is a flat muscle that runs across the body cavity below the lungs. </li></ul><ul><li>When it contracts inspiration occurs. </li></ul><ul><li>When it relaxes expiration occurs. </li></ul>Pg. 235

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