Review of the Circulatory and Respiratory Systems

Which blood type is considered the universal donor?

• AB+

• O-

• A+

• B-

What is the primary function of red blood cells?

• To fight infections

• To transport oxygen

• To produce antibodies

• To clot blood

Which process occurs in the alveoli of the lungs?

• Filtration

• Gas exchange

• Digestion

• Absorption

What role does hemoglobin play in the circulatory system?

• It digests food particles

• It transports oxygen

• It produces hormones

• It breaks down waste

Which of the following structures is part of the respiratory system?

• Kidney

• Trachea

• Liver

• Pancreas

What is the primary role of white blood cells?

• To carry oxygen

• To fight infections

• To transport nutrients

• To form blood clots

In a typical blood sample, what percentage is made up of plasma?

• 45%

• 55%

• 10%

• 90%

What is the buffy coat in a blood sample primarily composed of?

• Red blood cells

• White blood cells and platelets

• Plasma

• Hemoglobin

Which component of blood is primarily responsible for clotting?

• Red blood cells

• White blood cells

• Platelets

• Plasma

What percentage of a blood sample is typically made up of red blood cells?

• 1%

• 45%

• 55%

• 90%