Lecture 1: Composition Of Blood

Question 1

Average adult blood volume

Answer 1

4-6L, typically 4-5L for women, 5-6L for men

Question 2

Blood pH

Answer 2

Between 7.35-7.45 (slightly alkaline)

Question 3

Blood is composed of about:

Answer 3

55% plasma
44% red blood cells
1% white blood cells and platelets

Question 4

What is a Buffy coat

Answer 4

The thin middle layer in a centrifuged blood vial consisting of WBC’s and platelets

Question 5

Plasma consists of:

Answer 5

91.5% water and 8.5% solutes

Question 6

What types of solutes are in plasma?

Answer 6

Albumins, globulins. Fibrinogen, electrolytes, hormones, non protein nitrogen compounds, nutrients and respiratory gases

Question 7

What is a formed element

Answer 7

Blood

Question 8

What stain is used on a peripheral blood smear

Answer 8

Wrights stain

Question 9

What are Erythrocytes

Answer 9

Red blood cells

Question 10

What is the most common type of blood cell

Answer 10

Red blood cells (erythrocytes)

Question 11

What is the lifespan of Erythrocytes?

Answer 11

Approximately 120 days

Question 12

What are thrombocytes?

Answer 12

Platelets

Question 13

What do thrombocytes do?

Answer 13

Adhere to blood vessel walls, aggregate, and supply a surface for coagulation reactions

Question 14

What is the lifespan of thrombocytes

Answer 14

7-10 days

Question 15

What are leukocytes

Answer 15

White blood cells

Question 16

What are the 2 divisions of white blood cells?

Answer 16

Granulocytes
Agranulocytes

Question 17

What are the 3 types of granulocytes?

Answer 17

Neutrophils
Eosinophils
Basophils

Question 18

What are the three types of agranulocytes?

Answer 18

Lymphocytes
Monocytes

Question 19

What do neutrophils combat?

Answer 19

Bacterial infection

Question 20

What do eosinophils combat?

Answer 20

Parasitic infection

Question 21

What do basophils combat?

Answer 21

Inflammation and immune response

Question 22

What do lymphocytes combat?

Answer 22

Viral infections