Grade 12 Circulatory System Quiz

What is the main function of the circulatory system?

• Transporting oxygen, nutrients, and waste products

• Filtering blood

• Regulating body temperature

• Producing hormones

Which of the following is NOT a component of blood?

• Platelets

• Red blood cells

• White blood cells

• Plasma

What is the correct pathway of blood through the heart?

• Right atrium -> Right ventricle -> Pulmonary artery -> Lungs -> Pulmonary veins -> Left atrium -> Left ventricle -> Aorta -> Body

• Right atrium -> Right ventricle -> Aorta -> Lungs -> Pulmonary veins -> Left atrium -> Left ventricle -> Pulmonary artery -> Body

• Left atrium -> Right ventricle -> Pulmonary artery -> Lungs -> Pulmonary veins -> Right atrium -> Left ventricle -> Aorta -> Body

• Right atrium -> Left ventricle -> Pulmonary artery -> Lungs -> Pulmonary veins -> Right atrium -> Left ventricle -> Aorta -> Body

Which of the following is responsible for regulating blood flow?

• Respiratory system

• Cardiovascular system

• Nervous system

• Digestive system

Which of the following is a disorder of the circulatory system?

• Arthritis

• Asthma

• Diabetes

• Hypertension

What is the function of the heart valves?

• To prevent backflow of blood and ensure one-directional flow

• To produce hormones

• To regulate body temperature

• To pump blood to the lungs

Which blood vessels carry oxygenated blood?

• Capillaries

• Arteries

• Lymph vessels

• Veins

What is the role of hemoglobin in the blood?

• It is responsible for muscle contraction.

• It carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs.

• It regulates body temperature.

• It helps in the digestion of food.

What is the function of the lymphatic system?

• Maintaining fluid balance, absorbing fats, and defending against infections.

• Breaking down food for digestion

• Producing hormones for growth and development

• Transporting oxygen to the body's cells

Which of the following is a symptom of a circulatory system disorder?

• Blurred vision

• Loss of appetite

• Shortness of breath

• Joint pain