Circulatory system

• What is the smallest unit of life?

  Cell
• Circulatory system


  • Function to transport blood and the substances it carries to and from all parts of the body.
• The main function of the circulatory system is to deliver oxygen to the body tissues, removing carbon dioxide produced by Metabolism.
• Metabolism


  a term that is used to describe all chemical reactions involved in maintaining the living state of the cells and the organism
• Blood


  is a fluid that moves through the vessels of a circulatory system.
• What is the rarest blood type?

  AB negative
• What blood type is the universal donor?

  O negative
• What are the 4 composition of blood?

  • Plasma
  • Red blood cell
  • White blood cell
  • Platelets
• Plasma


  The liquid component of blood, the main component of blood and consists mostly of water, with proteins, ions, nutrients, and wastes mixed in.
• Red blood cells or Erythrocytes


  • It is responsible for carrying oxygen and carbon dioxide.
• Hemoglobin, a key protein used in oxygen transport
• Platelets or Thrombocytes


  They are cell fragments involved in blood clotting.
• Platelets are produced when large cells called megakaryocytes break into pieces.
• White blood cells or Leukocytes


  The cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.
• Neutrophil

  • phagocyting a bacteria and other pathogens
• Eosinophil

  • control mechanisms associated with allergy
• Arteries


  These are blood vessels that carry oxygenated blood from the heart to the body.
• Veins


  These are blood vessels that carry deoxygenated blood from the body back into the heart.
• Capillaries


  These are tiny blood vessels between arteries and veins responsible for gas exchange.
• Heart


  it is the central organ of the circulatory system.
• The heart is made up of Cardiac muscle and moves involuntarily.
• What are the 4 chambers of the heart?

  • Left atrium and Right atrium
  • Left ventricle and Right ventricle
• What are the 4 valves of the heart?

  • Tricuspid valve
  • Pulmonary valve
  • Mitra valve
  • Aortic valve
• Superior vena cava


  This large vein brings deoxygenated blood from the head, neck, arm, and chest regions of the body to the right atrium.
• Inferior vena cava


  This vein brings de-oxygenated blood from the lower body regions (legs, back, abdomen and pelvis) to the right atrium.
• Pulmonary artery


  carries deoxygenated blood from the right ventricle to the lungs
• Pulmonary vein


  the veins that transfer oxygenated blood from the lungs to the heart
• Pulmonary circulation


  It moves blood between the heart and the lungs.
• Systemic circulation


  moves blood between the heart and the rest of the body