Circulatory System

• Circulatory System

  Also known as the cardiovascular system
• Functions of the Circulatory System

  • Transport Materials
  • Regulation of Temperature
  • Removal of waste products
  • Fighting Diseases
• Major parts of the circulatory system

  • Heart
  • Blood
  • Blood Vessels
• Parts of the Heart

  • Atria
  • Ventricles
• Components of Blood

  • Plasma
  • RBC
  • WBC
  • Blood Platelets
• Functions of Blood

  Defense, Transport, Temperature and pH Regulation
• Blood Vessels

  • Arteries
  • Veins
  • Capillaries
• Arteries


  • Carry blood away from the heart
  • Carry oxygen-rich blood
• Veins


  • Carry blood from the tissue and cells of the body organs to the heart
  • Carry oxygen-poor blood
  • Possess valves that prevent the backflow of the blood
• Capillaries


  • Smallest blood vessels
  • Move blood to and from the cells of the body
  • Site of gas exchange between blood cells and body cells
• 3 Important Proteins in the Blood

  • Fibrinogen
  • Serum Albumin
  • Serum Globulin
• Fibrinogen


  Blood plasma protein made in the liver, responsible for normal blood clotting
• Serum Albumin


  Most abundant protein in human blood plasma, helps maintain fluid balance
• Serum Globulin


  Composed chiefly of antibodies, transports various substances in the blood and involved in defense mechanisms
• Red Blood Cells (RBCs)


  Also called erythrocytes, deliver oxygen to the tissues, transport carbon dioxide to the lungs, contain hemoglobin, have no nucleus, made in the bone marrow, lifespan of 80-120 days
• White Blood Cells (WBCs)


  Also called leukocytes, part of the body's defense team
• Platelets


  Also called thrombocytes, help in the clotting of wounds, flow through the bloodstream in an inactive state unless needed, die every ten days and constantly regenerated
• Blood Types

  • A
  • B
  • AB
  • O
• Pulmonary Circulation


  Occurs only between the heart and the lungs, carries deoxygenated (oxygen-poor) blood to the lungs, picks up O2, expels excess CO2 and water, carries oxygenated (oxygen-rich) blood back to the heart
• Systemic Circulation


  Occurs between the heart and the rest of the body, except for the lungs, carries oxygenated blood to all cells and transports deoxygenated blood back to the heart
• Coronary Circulation


  Consists of the blood vessels that supply blood to, and remove blood from, the heart
• 
  

  The circulatory system transports blood and other materials, carrying essential supplies to the cells and extracting their wastes. The respiratory system is where gas exchange takes place, the lungs are the only place in the body where gases in the blood are exchanged with gases from the atmosphere. The two systems work closely together to maintain homeostasis.
• parts of the heart

  A) pulmonary vein

  B) mitral valve

  C) aortic valve

  D) pulmonary artery

  E) left ventricle

  F) right ventricle

  G) inferior vena cava

  H) tricuspid valve

  I) pulmonary valve

  J) right atrium

  K) left atrium

  L) aorta

  M) superior vena cava