human respiratory and circulatory system

• Respiratory System


  • Takes in oxygen from the air that you breathe
  • Expels carbon dioxide from your body
• Respiratory System


  • The lungs are the main structures in this system
• Respiratory System


  1. Air enters your body through nose or mouth

  2. Moves down your throat & passes through the trachea or windpipe

  3. Then to your lungs
• Respiratory System


  • The diaphragm is a muscle that tightens and relaxes to make you breathe in and out
• Respiratory System


  1. Oxygen is taken into your blood

  2. Carbon dioxide leaves your blood through small tubes called bronchi

  3. Then tiny air sacs called alveoli
• Circulatory System


  • Carries oxygen, nutrients & waste throughout the body
  • Made up of the heart, blood vessels and blood
• Circulatory System


  • The heart is the center of this system, it pumps blood through blood vessels called arteries
  • The heart is also called the cardiovascular muscle
• Circulatory System


  1. Blood moves from arteries to capillaries

  2. In the capillaries oxygen & nutrients move from the blood to the body's cells

  3. Blood then moves through veins back to the heart, carrying carbon dioxide in it
• Respiratory system


  Gives oxygen & the circulatory system takes that oxygen to other cells
• Digestive system


  Breaks down nutrients in food & the circulatory system carries the nutrients to cells in the body
• Circulatory System


  • Also sometimes called the Cardiovascular System
  • Cardio - means heart
  • Vascular - means vessels