1. KEY CONCEPT Blood is a complex tissue that transports materials.

3. Blood
Functions
Pick-up Wastes:
Oxygen from the lungs
Carbon Dioxide from the cells
Urea from the kidneys
Heat released through skin
Deliver: digested nutrients-proteins, fats, carbohydrates, vitamins and minerals
Oxygen
Hormones-chemical messengers

4. Blood is composed mainly of cells, cell fragments, and plasma.
Whole blood is made up of different materials.
plasma
red blood cells
white blood cells
platelets
red blood cells,
white blood cells,
and platelets
plasma

5. Plasma is a key factor in maintaining homeostasis.
molecules diffuse into and out of plasma
contains proteins that stabilize blood volume
contains clotting factors
contains immune proteins

6. Platelets and different types of blood cells have different functions.
The bone marrow manufactures most of the blood components.
red blood cell
platelet
white blood cell

7. Platelets Cell parts that aid in forming blood clots 250,000 per drop
Small, circular, no nucleus
Made in bone marrow form cells that break apart
Live five days
Disease- Hemophilia- genetic disorder where blood does not clot.

8. Red blood cells make up 40-45 % of all blood cells.
transport oxygen to cells and carry away carbon dioxide
have no nuclei and contain hemoglobin

9. Red Blood Cells
a. Living, round cells that contain a nucleus that dissolves.
b. 5,000,000 per drop
c. Live around 120 days
d. Contain hemoglobin
e. Carry oxygen to body cells
f. Made in bone marrow- the soft center part of long bones.
Problem-Anemia-weak, tired, short of breath

10. White blood cells fight pathogens and destroy foreign matter.
red blood cell
platelet
white blood cell

11. White Blood Cells Destroy harmful microbes Remove dead cells
Make proteins that prevent diseases (antibodies)
Larger than RBC and do have a nucleus
Can leave the capillaries
8,000 per drop
Make in bone marrow, spleen, thymus gland and tonsils
Live-it varies-from 10 days, months, or years
Disease-Leukemia-increase in number but nonfunctioning

12. Protein markers define blood types and Rh factors.
ABO blood group the most common
Rh factor can be negative or positive
blood types must be compatible for transfusions

13. Platelets help form clots that control bleeding.
fibrin
red blood cell
white blood cell

14. Open book to page 926 Define the terms on page 926 Fead the chapter Answer the questions on p. 929 # 1-5