Q: The Cardiovascular System: Blood & The Heart

The stem cell that give rise to all formed elements are

• hemocytoblasts

• lymphoblasts

• megakaryoblasts

• monoblasts

Which of the ff constituents of blood is used as a sensitive indicator of increased hematopoiesis?

• erythrocytes

• reticulocytes

• neutrophils

• platelets

The most numerous types of leukocytes whose primary function is phagocytosis are

• macrophages

• lymphocytes

• neutrophils

• thrombocytes

Monocytes

• Are the smallest sized leukocytes

• Increase in number in chronic infections

• give rise to neutrophils

• all of the above

A constituent of blood plasma that forms the network of fibers in a clot is

• fibrinogen

• thromboplastin

• platelets

• thrombin

What blood disorder might a person develop after moving to a city at a high altitude?

• polycythemia
• sickle cell anemia
• pernicious anemia
• aplastic anemia

The three step process that stops blood flowing from a cut is called _________

• hemostasis
• homeostasis
• coagulation
• agglutination

Low levels of oxygen in the blood stimulate the kidneys to release the hormone ______

• erythropoietin
• adrenalin
• insulin
• epinephrine

Antibodies binding to antigens on RBCs causes a clumping known as __________

• agglutination
• coagulation
• clotting cascade
• hemolysis

Which leukocyte produces antibodies?

• lymphocytes
• monocytes
• eosinophils
• basophils