Blood Components and Functions

What percentage of blood volume is typically made up of white blood cells & platelets?

• 55%

• 45%

• 100%

• 1%

Which component of blood is responsible for carrying nutrients and hormones?

• Plasma

• Buffy coat

• Red blood cells

• Platelets

What is the primary function of red blood cells (RBCs)?

• To produce antibodies

• To transport oxygen and carbon dioxide

• To release histamine

• To attack parasites

Which type of white blood cell is the first responder to infection?

• Basophils

• Neutrophils

• Eosinophils

• Lymphocytes

What percentage of a centrifuged blood sample is typically plasma?

• 1%

• 45%

• 55%

• 75%

Which type of white blood cell releases histamine for inflammation?

• Neutrophils

• Basophils

• Eosinophils

• Monocytes

What is the role of eosinophils in the blood?

• To attack parasites and be involved in allergic reactions

• To perform phagocytosis of bacteria

• To develop into macrophages

• To destroy infected cells

What is the primary function of lymphocytes in the blood?

• To transport oxygen

• To produce antibodies and destroy infected cells

• To release heparin

• To perform phagocytosis

What is the approximate percentage of red blood cells in a centrifuged blood sample?

• 1%

• 45%

• 55%

• 75%

What is the function of heme groups in hemoglobin?

• To bind carbon dioxide

• To bind oxygen

• To release histamine

• To attack parasites