PPT 5 EXAM 3: Blood

Question 1

what are the 3 functions of blood in the body?

Answer 1

1) Transportation
- nutrients
- oxygen and CO2
- hormones
- other wastes

2) Defense
- white blood cells (immune system)
- platelets and some proteins

3) Maintenance of homeostasis
- body temperature
- pH and water content
- blood pressure

Question 2

name the 5 characteristics of blood

Answer 2

1) red (oxygenated or not)
2) viscuous:
- has a thickness, shows resistance to flow
3) higher temperature than body
- due to friction inside vessels
4) ph must be maintained between 7.35-7.45
5) adults have 4 to 6 liters of blood

Question 3

blood composition: 3 things

Answer 3

1) connective tissue

2) extracellular matrix
- plasma= approx. 55%

3) formed elements: