Blood Quiz

What are the four main components of blood?

• Plasma, white blood cells, hormones, and platelets

• Plasma, red blood cells, white blood cells, and platelets

• Plasma, red blood cells, nutrients, and hormones

• Red blood cells, white blood cells, platelets, and antibodies

What percentage of total body weight is blood in an average-sized man?

• About 7 to 8 percent

• About 5 to 6 percent

• About 9 to 10 percent

• About 12 to 13 percent

What is the main function of plasma in the blood?

• To carry oxygen to the lungs

• To transport blood cells throughout the body and maintain fluid balance

• To fight infection

• To regulate body temperature

What is the shape of a red blood cell and why is it beneficial?

• Spherical - it allows for faster movement through the bloodstream

• Disc-shaped with a hollow center - it increases the cell's surface area for gas exchange

• Irregular - it helps to navigate through small blood vessels

• Oval - it provides a larger volume for carrying oxygen

What is the lifespan of a typical red blood cell?

• 60 days

• 90 days

• 120 days

• 150 days

What is the primary function of hemoglobin in red blood cells?

• To fight infection

• To clot blood

• To carry oxygen from the lungs to the rest of the body

• To maintain fluid balance

What percentage of your blood is made up of white blood cells?

• About 1 percent

• About 10 percent

• About 45 percent

• About 55 percent

Which type of white blood cell is known as the "immediate response" cell and makes up 55 to 70 percent of the total white blood cell count?

• Lymphocytes

• Platelets

• Neutrophils

• Erythrocytes

What are platelets also called?

• Hemoglobin

• Thrombocytes

• Leukocytes

• Erythrocytes

What is the primary function of platelets?

• Carrying oxygen

• Attacking infected cells

• Blood clotting

• Producing antibodies