Circulatory System Quiz

What is the primary function of the circulatory system?

• To digest food

• To control body temperature

• To transport nutrients and waste

• To produce hormones

Which component of blood is primarily responsible for fighting infections?

• Plasma

• Red blood cells

• White blood cells

• Platelets

What is the main liquid component of blood?

• White blood cells

• Red blood cells

• Plasma

• Platelets

Where does hematopoiesis primarily occur?

• In the liver

• In the red bone marrow

• In the heart

• In the lungs

What is the role of albumins in blood plasma?

• To transport oxygen

• To thicken the blood

• To fight infections

• To form blood clots

What is serum?

• A component of red blood cells

• A hormone in the blood

• A type of white blood cell

• Plasma without clotting factors

Which protein is essential for the blood clotting process?

• Albumin

• Hemoglobin

• Globulin

• Fibrin

What vitamin is crucial for synthesizing prothrombin?

• Vitamin A

• Vitamin C

• Vitamin D

• Vitamin K

What is the function of thrombin in blood clotting?

• To thicken the blood

• To fight infections

• To convert fibrinogen to fibrin

• To transport oxygen

What is the role of platelets in the circulatory system?

• To form blood clots

• To fight infections

• To transport nutrients

• To carry oxygen