A&P II Test 3

What percentage of blood is plasma?

55%

Which of the following must occur first during hemostasis?

Formation of thrombin

What cells give rise to all formed elements?

Hematopoietic stem cells (HSC)

What is the oxygen-binding protein found in erythrocytes

Hemoglobin

Which type of leukocyte may produce antibodies

Lymphocyte

What cells are categorized as agranulocytes

Lymphocytes and monocytes

Platelets are cell fragments formed from

Megakaryocytes

Which blood type is compatible with B- during a transfusion

O-

Hemostasis is mediated by

Platelets

Select the appropriate pathway for the steps of hemostasis.

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

What vitamin is necessary for certain clogging factors to operate during coagulation

Vitamin K

A centrifuged same of blood shows 53% plasma, 1% Buffy coat, and 46% erythrocytes. What percentage of the blood is composed of leukocytes and platelets?

1%

The ABO blood group is based on which antigen(s)?

antigens A and B

What is the most common type of leukocyte in a healthy adult?

neutrophil

Nora was exposed to radiation that caused her red bone marrow to make fewer red blood cells. This condition is known as

Aplastic anemia