Digestive System

• Mouth


  Breaks the food down into small pieces and digestion of the carbohydrates
• Pharynx


  Allows food and the bolus to be passed to the esophagus
• Esophagus


  Tubeway for the bolus to the stomach
• Stomach


  Organ that catches the bolus, turns the bolus into a liquid called chyme
• Small Intestine


  Digests and absorbs proteins, fats, and carbohydrates, and is the main site for digestion
• Large Intestine


  Absorbs salt and water from food, leaving a soft mass called feces
• Rectum


  Acts as the feces's temporary storage
• Peristalsis


  A series of muscle contractions, that push down the food to the esophagus
• Circulatory system


  Carries blood away from and towards the heart
• Valves of the heart

  • Bicuspid
  • Tricuspid
  • Aortic
  • Pulmonary
• Bicuspid valve


  • Moves blood from the upper chambers of the heart (the atria) to the lower chambers of the heart (the ventricles)
  • Separates lower and upper chambers
• Tricuspid valve


  • Moves blood from the upper chambers of the heart (the atria) to the lower chambers of the heart (the ventricles)
  • Separates right atrium and right ventricle
• Aortic valve


  • Moves blood to the lungs and the rest of the body through the ventricles
  • Opens towards the aorta
• Pulmonary valve


  • Moves blood to the lungs and the rest of the body through the ventricles
  • Opens towards the pulmonary artery
• Chambers of the heart

  • Right atrium
  • Left atrium
  • Right ventricle
  • Left ventricle
• Right atrium


  Receives oxygen-poor blood from the body and pumps it to the right ventricle
• Left atrium


  Receives blood full of oxygen from the lungs and then empties the blood into the left ventricle
• Right ventricle


  Pumps the oxygen-poor blood through the pulmonary valve to the lungs
• Left ventricle


  Pumps oxygenated blood to the body