Bio 224 A Blood

Question 1

What forms most of the blood

Answer 1

Plasma

Question 2

What percentage of the blood is composed of plasma

Answer 2

fifity-five 55%

Question 3

When blood is centrifuged what is found in the buffy coat

Answer 3

Platelets and leukocytes

Question 4

A centrifuged sample of blood shows 53% plasma, 1% buffy coat, and 46% erythrocytes. What % of the blood is hematocrit?

Answer 4

47%

Question 5

Hematocrit is the percentage of the blood composed of

Answer 5

Erythrocytes

Question 6

Which of the following is considered a normal blood pH

Answer 6

7.40

Question 7

Which of the following statements about blood is False

Answer 7

Blood pH normally falls between 6.5 and 6.8

Question 8

The most abundant component of plasma is

Answer 8

Water

Question 9

What plasma protien is most important for the bloods colloid osmotic pressure

Answer 9

Albumin

Question 10

Which statement best describes RBC

Answer 10

RBC possess a protein known as hemoglobin

Question 11

The function of RBC IS TO

Answer 11

Transport oxygen and carbon dioxide

Question 12

What is the oxygen-binding protien fund in erythrocytes

Answer 12

hemoglobin

Question 13

Iorn molecules released from the breakdown of hemoglobin are transported through the blood by

Answer 13

Transferrin

Question 14

All RBC in an adult originate in the

Answer 14

Red bone marrow

Question 15

Since erythrocytes lack the cellular machinery to make repairs, they only live

Answer 15

100-120 days

Question 16

What organ serves as the control center for the regulation of erythropoiesis

Answer 16

Kidney

Question 17

process of RBC production is known as

Answer 17

Erythropoiesis

Question 18

Which of the following might trigger erythropoiesis

Answer 18

Blood oxygen levels fall below normal

Question 19

Which organ traps older erythrocytes so they will be removed from circulation

Answer 19

Spleen

Question 20

Bilirubin comes from the breakdown of

Answer 20

Heme molecules of hemoglobin that lack iron

Question 21

Which leukocytes is able to engulf bacteria

Answer 21

Neutrophils

Question 22

What is the most common type of leukocytes in a healthy adult

Answer 22

Neutrophil

Question 23

Neutrophils are most effective at

Answer 23

Fighting a bacterial inf

Question 24

During a tapeworm inf, you would expect to see increased numbers of

Answer 24

Eosinophils

Question 25

Which type of leukocyte may produce antibodies

Answer 25

Lymphocyte

Question 26

What feature do platelets possess

Answer 26

Granules

Question 27

Platelets are cell fragments formed from

Answer 27

Megakaryocytes

Question 28

Stoppage of bleeding is known as

Answer 28

hemostasis

Question 29

Select the appropriate pathway for the steps of hemostasis

Answer 29

Vascular spasms, platelet plug formation, coagulation, clot retraction and thrombolysis

Question 30

how do vascualr spasms contribute to the process of hemostasis

Answer 30

Vascular spasms limit blood loss

Question 31

medication known as anticoagulants interfere with

Answer 31

Coagulation cascade

Question 32

What vitamin is necessary for the proper production of functional clotting factors in the Liver

Answer 32

Vitamin K

Question 33

Some rat posins contain a toxin that blocks the liver ability to utilize vitamin K. Animals that consume poison would have problems with

Answer 33

Coagulation

Question 34

Carb group in the surface of erythrocytes determine blood type and are known as

Answer 34

Antigens

Question 35

the ABO blood group is based on which antigens

Answer 35

Antigen a and b