The Cardiovascular System

Your Blood

Blood in Our Body

Characteristics of Blood

  • Blood is denser and viscous then water.
  • Temperature of blood is normally 38 degrees Celsius or 110.4 degrees Fahrenheit.
  • Consists of 20% of extra cellular fluid and 8% of total body mass.

Amount of Blood

  • Adult Males- 5 to 6 liters
  • Adult Females- 4 to 5 liters

How is Blood Made and Where

  • Blood is made in the bone marrow, the red bone marrow (primarily in flat bone).
  • Blood cells are produced in bone marrow, a jelly like substance inside the bones that is composed of, fat, blood, and special cell that turn into the various kinds of blood cells.
  • Stem cells (plenipotentiary hematupoietia), which has the potential to turn into any kind of blood cell.
  • Stem cells develop in the marrow, they seep into the bloodstream.
  • Red blood cells last 120 days, platelets about 10 days, and white blood cells last anywhere from days to years in the bloodstream.


  • Plasma is a clear liquid this is 90% water and is an essential ingredient for human survival.
  • May seem like plasma is less important than the blood cells it carries, but that would be like saying the stream is less important than the fish swimming in it. You cant have one without the other.
  • Plasma contains dissolved salt an minerals like; calcium, sodium, magnesium, and potassium.
  • Antibodies travel to disease by hitching a ride in the plasma.
  • Without plasma blood cells would be left without transportation.
  • Plasma proteins, also termed serum proteins or blood proteins, are proteins present in blood plasma. They serve many different functions, including transport of lipids, hormones, vitamins and metals in the circulatory system and the regulation of acellular activity
  • In blood, the serum is the component that is neither a blood cell (serum does not contain white or red blood cells) nor a clotting factor; it is the blood plasma with the fibrinogens removed.
  • Human serum albumin is the most abundant blood plasma protein. Produced in the liver, albumin is an important component of life, where it transports essential fatty acids from adipose tissue to muscle tissue.
  • globulin, one of the major classifications of proteins, which may be further divided into theeuglobulins and the pseudoglobulins. The former group is insoluble in water but soluble in saline solutions and may be precipitated in water that has been half-saturated with a salt such as ammonium sulfate.
  • Fibrinogen (factor I) is a soluble, 340 kDa plasma glycoprotein, that is converted by thrombin into fibrin during blood clotting formation. Fibrinogen is synthesized in the liver by the heptocytes. The concentration of fibrinogen in the blood plasma is 200–400 mg/dL.
  • PROTHROMBIN. : a plasma protein produced in the liver in the presence of vitamin K and converted into thrombin in the clotting of blood