Blood+WB

(1) What are the functions of blood, and what are its two main portions? (2) What is the composition of plasma and what are the functions of plasma proteins? (3) What substances allow red blood cells (RBCs) to transport oxygen? (4) Why do RBCs have a bioconcave shape? (5) Name and describe three disorders associated with RBCs. (6) What are the different blood types and what determines blood type? (7) Among the ABO types of blood, who can give blood to whom? Why? (8) When does hemolytic disease in a newborn occur? (9) Tell how the functions of the cardiovascular system contribute to homeostasis? (10) In what way does the liver contribute to the functioning of the cardiovascular system?

1. The blood serves several functions in the body. Blood transports oxygen to and from the lungs. Blood also moves nutrients, taken from food, to the rest of the body. Blood also keeps a steady, constant body temperature.

2. Blood plasma has the job of maintaining the proper pH level in the blood. Plasma is made of 9% organic molecules, and 91% h2o.

3. Red blood cells are able to transport oxygen by means of hemoglobin.

4. Red blood cells are biconcave, or ovular, in order to better transport blood.

5. Some illnesses associated with red blood cells are anemia, hemolysis, sickle-cell.

6. There are four different blood types. They are A,B, AB, and O. They are determined by the different substances found within the blood.

7. Type O is the universal donor, because it does not harmfully interfere with any other blood type.

8. Hemolytic disease occurs in newborns when the mother has Rh- blood, but the mother has Rh+ blood.

9. The cardiovascular system contributes to homeostasis by keeping all other internal organs within their usual operating conditions. Also, the cardiovascular system deliver nutrients and oxygen throughout the body.

10. The liver helps the functioning of the cardiovascular system by acting as a filter, removing toxins and helping maintain safe blood pressure.