Quiz on Blood and Hemostasis

What is the function of Erythropoietin (EPO)?

• It triggers the development of megakaryocytes into platelets.

• It prompts the production of erythrocytes.

• It stimulates the proliferation of progenitor cells.

• It acts as a paracrine factor.

Which hormone triggers the development of megakaryocytes into platelets?

( produced by the liver and kidneys )

• Erythropoietin

• Thrombopoietin

• Cytokines

• fibrin

What are cytokines?

• Signaling molecules of the immune system

• binding molecules that form blood clots

• Cellular components of blood

• Connective tissue in the interior cavity of a bone

What is the hollow interior of a bone, commonly filled with yellow bone marrow, called?

• Red marrow

• Medullary cavity

• Vascular spasm

• Embolus

What is the hematopoietic stem cell?

• A glycoprotein hormone

• A fragment of the cytoplasm of a cell

• The cell from which all formed elements of blood originate

• The hollow interior of a bone

What is an embolus?

• A fragment of the cytoplasm of a cell

• A blood clot that blocks a vessel

• A glycoprotein hormone

• A cell that originates from the hematopoietic stem cell

What is the most common cause of hemophilia?

• insufficient

  blood clotting factors

• insufficient

  blood pressure

• insufficient

  body temperature

• insufficient

  leukocytes

What happens during vascular spasm?

• The smooth muscle in the walls of the vessel contracts dramatically.

• The blood vessel seals a ruptured blood vessel.

• The body produces erythrocytes.

• The liver and kidneys produce thrombopoietin.

Where does hematopoiesis take place?

• Yellow marrow

• Red marrow

• Medullary cavity

• Endothelial cells

What are the cellular components of blood?

• Erythrocytes, leukocytes, and platelets

• Cytokines, erythrocytes, and leukocytes

• Platelets, cytokines, and erythrocytes

• Leukocytes, cytokines, and platelets