Blood - Part 1

Question 1

How much blood is the avg. body?

Answer 1

10 pints (4.7 - 5.0 liters)

Question 2

What is one unit of blood?

Answer 2

450 - 500 ccs (~1 pint)

Question 3

What % of body weight is from blood?

Answer 3

7-8%

Question 4

What are the critical functions of blood?

Answer 4

1) transport oxygen / nutrients to cells 2) rid the body of CO2 and other waste 3) vital to immune system 4) maintain constant body temp

Question 5

What is the purpose of artificial blood?

Answer 5

Only to transport oxygen & CO2 (doesn’t do other things)

Question 6

What are the components of blood?

Answer 6

Red Blood Cells, White Blood Cells, Platlets, Plasma

Question 7

What are the medical names for RBC, WBC, and platelets?

Answer 7

Erythrocytes, Leukocytes, Thrombocytes

Question 8

RBC or Erythrocytes… Primary Role, % of total blood,

Answer 8

• Primary role: transport oxygen from lungs to all living tissue and carry away CO2 - 40 - 50% total blood

Question 9

RBC… lifespan, what organ removes them, where made, how many made per second

Answer 9

• 120 day lifespan - removed by spleen - made in bone marrow from stem cells - 2-3 million / sec made

Question 10

What is Erythropoietin?

Answer 10

Glycoprotien made in kidneys, controls RBC production

Question 11

How long does Erythropoiesis take?

Answer 11

7 - 14 days

Question 12

What is the synthetic process of RBC production called?

Answer 12

Epoetin Alfa

Question 13

How long can RBC be stored?

Answer 13

42 days

Question 14

WBC or Leukocytes… Primary Role, % of total blood

Answer 14

• Protect the body from invasion of foreign substances, critically involved in controlling inflammation - < 1% of total blood

Question 15

Where are WBC produced?

Answer 15

Mostly in marrow

Question 16

Platlets or Thrombocytes… primary role, % of total blood

Answer 16

• blood clotting, adhere to walls of vessels and plug ruptures - < 1% of total blood

Question 17

Where are platlets produced? Lifespan?

Answer 17

• produced in bone marrow from stem cells - 9-10 days

Question 18

What is a coagulation cascade?

Answer 18

chain reaction in plasma, changes plug into strong clot

Question 19

What is plasma? Made of? % of blood volume?

Answer 19

• Liquid portion of blood - protein / salt solution - 90% water - 55% blood volume

Question 20

How does plasma relate to blood pressure?

Answer 20

Plasma maintains blood pressure