Understanding Blood and Its Components

What is the primary function of plasma in the blood?

• To transport oxygen

• To form blood clots

• To maintain pH and osmotic balance

• To produce blood cells

What are platelets primarily responsible for?

• Fighting infections

• Carrying oxygen

• Blood clotting

• Transporting nutrients

What is the unique shape of red blood cells called?

• Cuboidal

• Biconcave

• Flat

• Spherical

Why do mature red blood cells lack a nucleus?

• To maximize hemoglobin content

• To enhance flexibility

• To reduce their size

• To increase their lifespan

Which type of white blood cell is the first to respond to an injury?

• Neutrophils

• Eosinophils

• Basophils

• Lymphocytes

What is the primary role of eosinophils?

• To transport oxygen

• To engulf bacteria

• To calm inflammation

• To produce antibodies

What do basophils release to intensify the inflammatory response?

• Enzymes

• Antibodies

• Histamines

• Cytokines

What is the primary function of macrophages?

• To engulf and digest cellular debris

• To release histamines

• To transport oxygen

• To produce antibodies

Which cells are responsible for recognizing cells that do not belong in the body?

• B cells

• T cells

• Natural killer cells

• Monocytes

What is the role of memory B cells in the immune system?

• To remember past invaders

• To produce antibodies

• To attack foreign cells

• To release histamines