Circulatory

• Circulatory system


  The system that includes the heart, blood, and blood vessels and that circulates blood through the body

  
• Heart


  • Muscular organ that has four chambers
  • Pumps blood around the body
• Components of blood


  • Plasma
  • Red blood cells
  • White blood cells
  • Platelets
• Blood


  Carries oxygen, nutrients and wastes
• Blood vessels


  • Arteries
  • Veins
  • Capillaries

  
• Blood vessels


  Serve as channels for the blood
• How the circulatory system works


  1. Right ventricle sends oxygen-poor blood to the lungs

  2. Blood cells pick up oxygen in the lungs

  3. Pulmonary veins carry oxygenated blood to the left atrium

  4. Left atrium sends oxygenated blood to the left ventricle

  5. Left ventricle pumps blood out to the body through the arteries

  6. Blood collects and drops off nutrients, hormones and waste products as it moves through the body

  7. Veins carry deoxygenated blood and carbon dioxide back to the heart

  8. Lungs get rid of the carbon dioxide when you exhale
• The circulatory system delivers oxygen and nutrients to the body, while also removing wastes
• Bronchial tree refers to all the branches of the bronchi within the lung
• The bronchi are two tubes that branch off from the trachea into the lungs
• The trachea is the windpipe, which connects to the larynx
• Alveoli are tiny air sacs where gas exchange occurs between the alveolar walls and capillaries.
• Pulmonary circulation is the flow of blood from the right side of the heart to the lungs and then back to the left side of the heart.
• Each bronchiole is surrounded by smooth muscle which can contract or relax to control airflow
• Alveoli are tiny sacs where gas exchange occurs between the alveolar walls and capillaries
• Systemic circulation is the flow of blood from the left side of the heart to the rest of the body and then back to the right side of the heart.
• Gas exchange takes place across the thin membrane separating the alveolus and the pulmonary capillary.
• Capillaries are small vessels with thin walls that allow gases to diffuse easily across them.
• The pulmonary artery carries deoxygenated blood away from the heart to the lungs
• Systemic circulation is the flow of blood from the left side of the heart through arteries to tissues and organs, returning via veins to the right atrium.
• Pulmonary circulation involves the flow of blood between the heart and lungs.
• Systemic circulation involves the flow of blood throughout the rest of the body.
• The pulmonary vein carries oxygenated blood away from the lungs to the heart
• Blood pressure is the force exerted by blood against the walls of vessels as it flows through them.
• Systole is when the ventricles contract and pump blood out of the heart.
• Blood flows through pulmonary veins from the lungs to the left atrium of the heart
• Capillaries are small vessels with thin walls that allow gases to diffuse easily across them
• The intercostal muscles are located between the ribs and assist with breathing
• Oxygenated blood returns to the heart via the pulmonary vein