MODULE 3 ( PHLEB LEC )

• Channels that carry blood throughout your body

  BLOOD VESSELS
• Circulatory system is made up of?

  HEART AND BLOOD VESSELS
• Two Classes/Systems of Blood Vessels

  PULMONARY AND SYSTEMIC SYSTEM
• What is Pulmonary System?

  TRANSPORT BLOOD FROM THE RIGHT VENTRICLE OF THE HEART TO THE LUNGS AND BACK TO THE LEFT ATRIUM
• What is Systemic System?

  TRANSPORT BLOOD FROM THE LEFT VENTRICLE OF THE HEART THROUGH ALL PARTS OF THE BODY
• Functions of Circulatory System

  CARRIES BLOOD, EXCHANGES NUTRIENTS, TRANSPORTS SUBSTANCES, HELPS REGULATE BLOOD PRESSURE AND, DIRECTS BLOOD FLOW TO THE TISSUES
• Three Main Types of Blood Vessels

  ARTERIES, CAPILLARIES, AND VEINS
• Arteries (description)


  BRIGHT-RED, OXYGENATED, NO VALVES, PULSE IS PRESENT, CARRY BLOOD AWAY FROM THE HEART
• Three Categories of Arteries

  ELASTIC, MUSCULAR, AND ARTERIOLES
• What is the largest and smallest artery vessel?

  AORTA AND ARTERIOLES
• Capillaries (description)


  EXCHANGE OF GASES OR SUBSTANCES OCCUR, THINNER WALLS THAN ARTERIES, CONNECTS ARTERIES AND VEINS
• Smallest Blood Vessels


  CAPILLARIES
• Veins (description)


  DARK-RED, DEOXYGENATED, WITH VALVE, NO PULSE, CARRY BLOOD TOWARD THE HEART
• Smallest to Largest Veins

  VENULES, SMALL VEINS, MEDIUM-SIZED VEINS, LARGE VEINS
• What are the Three Tunics?

  TUNICA INTIMA, TUNICA MEDIA, AND TUNICA EXTERNA/ADVENTITIA
• Innermost layer/Direct contact during blood flow/Simple squamous epithelium

  TUNICA INTIMA
• Middle Layer/Smooth Muscle Layer

  TUNICA MEDIA
• Outermost Layer/Connective Tissue/Nerves & Self-Vessels

  TUNICA EXTERNA/ADVENTITIA
• What are the Heart Layers?


  PERICARDIUM, MYOCARDIUM, AND ENDOCARDIUM
• Outermost Layer of the Heart

  EPICARDIUM
• Main constituent of the heart and the thickest layer of all three heart layers. It is a muscle layer that enables heart contractions.

  MYOCARDIUM
• Innermost Layer of the Heart

  ENDOCARDIUM
• Arteries vs. Veins


  BLOOD, COLOR OF BLOOD, VALVES, PULSE
• Stop the blood from going in the wrong direction

  VALVES
• Surround the veins so that when the muscles contract, the veins are squeeze and the blood been pushed along the vessels

  BODY MUSCLES
• SVC & IVC


  VENA CAVA
• Smallest vein vessels


  VENULES
• Returns tissue fluid to the bloodstream, protects the body by removing microorganisms and impurities, processes lymphocytes, and delivers fats absorbed from the small intestine to the bloodstream

  LYMPHATIC SYSTEM
• What is Lymphocytes?


  TYPE OF WHITE BLOOD CELLS IN THE VERTEBRATE IMMUNE SYSTEM
• What is Lymphatic Vessels?

  THIN TUBE THAT CARRIES LYMPH AND WBC THROUGH THE LYMPHATIC SYSTEM
• Referred to as "the river of life"

  BLOOD
• Adult has approx. ___ liters of blood

  5
• __ are formed elements/cells

  45%
• __fluid (plasma in circulation w/fibrinogen)

  55%
• Pale yellow fluid (91% water; 7% proteins; 2% ions, nutrients, gases, waste products, and regulatory substances)

  PLASMA
• Plasma is composed of

  ALBUMIN, GLOBULIN, FIBRINOGEN
• Makes up 58% of plasma proteins


  ALBUMIN
• 38% of plasma proteins (antibodies and complement)

  GLOBULIN
• Clotting factor; 4% of plasma proteins


  FIBRINOGEN
• Three Formed Elements


  RBC, WBC, AND PLATELETS