Nutrition by Mabel
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  • 1. By maBel aliste herrera
  • 2. Function of Nutrition: Digestive system  In charge of digestion Respiratory system  In charge of breathing Circulatory system  Transports nutrients Excretory system  In charge of excretion
  • 3. The Food Pyramid:
  • 4. The Digestive System:  Digestion is the process in which food changes into nutrients. It takes place in the Digestive System which has two parts:  The Digestive Tract: Its parts are the mouth, the pharynx, the oesophagus, the stomach, the small intestine and the large intetsine.  Glands: They release chemicals. They are the salivary glands, the liver and the pancreas.
  • 5. Breathing: It´s the process where the body takes in oxygen and releases carbon dioxide. Lung ventilation: Inhaling is when air goes into the lungs. Exhaling sends air out of the lungs. Exchange of gases: Oxygen breathed in goes to the blood and the carbon dioxide from the blood moves to the lungs
  • 6. Respiratory System
  • 7. Parts of the Respiratory System:  1. Nostrils  2. Pharynx  3. Larynx  4. Trachea  5. Bronchi  6. Lungs  7. Diaphragm
  • 8. Excretion and the excretory system: It´s the elimination of the waste substances collected. The excretory system is made up of: Sweat glands The Urinary system: made up of Kidneys and Urinary Tract.  1. Kidneys  2. Ureters  3. Bladder  4. Urethra
  • 9. Circulation and the Circulatory System: Circulaton is the transportation of blood through the circulatory system carrying nutrients and oxygen to all the cells and collecting waste substances. It´s made up of: Heart Blood Blood Vessels: Arteries, Veins and Capillaries
  • 10. Blood: Blood is a red liquid tissue made up of cells that float in a nutritious liquid called plasma. Blood plasma Blood cells: -Red blood cells -White blood cells -Platelets
  • 11. The heart  It’s divided into two cavities: -Atrium -Ventricle  It uses rhythmic systole and diastole movements to pump blood:-Systole -Diastole The heart has two atria and two ventricles. The veins meet at the atria. The arterias leave from the ventricles. The heart pumps blood using systole an diastole.
  • 12. Human circulation Pulmonary circulation: The blood with carbon dioxide comes out of the right ventricle through the PULMONARY ARTERY. It picks up oygen in the ALVEOLI OF THE LUNGS and it reaches the left atrium through the PULMONARY VEINS. Systemic circulation: The blood with oxygen leaves the left ventricle through the AORTA and distributes to all the cells through the BLOOD CAPILLARIES. It returns to the heart through the VENA CAVA.
  • 13. Eat healthy!  THE END