Blood+HW+-+PK

//**Blood (Chapter 6 of new book)**//



- The functions of blood are totransport, defense and regulate the body. The two main portions are formed elements (cells and cell fragments) and plasma.
 * (1) What are the functions of blood, and what are its two main portions?**

- The composition of plasma is water, various salts and organic molecules. Plasma proteins help maintain homeostasis through their ability to catch and release hydrogen ions.
 * (2) What is the composition of plasma and what are the functions of plasma proteins?**

- The protein hemoglobin helps the cell transport oxygen.
 * (3) What substances allow red blood cells (RBCs) to transport oxygen?**

- RBCs have a bioconcave shape because they ack a nucleus and the shape give them a greater surface for diffusion.
 * (4) Why do RBCs have a bioconcave shape?**



- Anemia is when there is an insufficient amount of RBS or the RBCs do not have enough hemoglobin. Hemolysis is when anemia becuse so severe that that the red blood cells begin to rupture. Sickle cell disease is a hereditary condition where the individual has sickle-shaped red blood cells that tend to rupture as they pass through the narrow capillaries. Hemolytic disease of the newbod is a type of helytic anemia.
 * (5) Name and describe three disorders associated with RBCs**

- There are two different blood types; ABO and Rh blood groups. The ABO blood groups are A + or -, B + or -, O + or -, or AB + or -. The RH groups determine whether the blood cells have the Rh factor or not.
 * (6) What are the different blood types and what determines blood type?**

- Type A blood can receive A positive or negative. Type B blood can receive A positive or negative. Type O blood can receive type O. Type AB can receive either type A + or - blood and type B + or -.
 * (7) Among the ABO types of blood, who can give blood to whom? Why?**

- The hemolytic disease occurs when the father is Rh - and the mother is Rh +. If the baby's Rh is negative, than the mother's immune system view the negative blood cells as foreign and fight the newborn's blood cells.
 * (8) When does hemolytic disease in a newborn occur?**



- The cardiovascular system contribute to homeostasis through supplying the body with oxygen.
 * (9) Tell how the functions of the cardiovascular system contribute to homeostasis?**

- The liver contributes to the cardiovascular system through it's role in metabolism, glycogen storage, plasma protein synthesis and detoxification.
 * (10) In what way does the liver contribute to the functioning of the cardiovascular system?**