Understanding Blood Circulation

What is the main function of red blood cells?

• To produce insulin for the body.

• To store nutrients and vitamins.

• To fight off infections and diseases.

• To transport oxygen and carbon dioxide.

Which component of blood is responsible for clotting?

• Platelets

• Plasma

• White blood cells

• Red blood cells

What is the liquid part of blood called?

• plasma

• red blood cells

• serum

• white blood cells

How does oxygen travel in the blood?

• Oxygen travels in the blood bound to hemoglobin and dissolved in plasma.

• Oxygen is carried only in red blood cells without hemoglobin.

• Oxygen travels in the blood as carbon dioxide.

• Oxygen is primarily transported as a gas in the arteries.

What is the role of white blood cells?

• To transport oxygen throughout the body.

• To produce hormones for growth and metabolism.

• The role of white blood cells is to protect the body against infections and foreign invaders.

• To break down food in the digestive system.

What is the function of platelets in the blood?

• The function of platelets in the blood is to help stop bleeding by forming blood clots.

• To transport oxygen throughout the body.

• To fight off infections and diseases.

• To regulate body temperature.

Which chamber of the heart receives oxygenated blood?

• Right atrium

• Left atrium

• Left ventricle

• Pulmonary artery

What is the pathway of blood flow through the heart?

• The pathway of blood flow through the heart is: Right atrium → Right ventricle → Lungs → Left atrium → Left ventricle → Body.

• Right atrium → Left ventricle → Lungs → Right ventricle → Left atrium → Body

• Right ventricle → Lungs → Left atrium → Right atrium → Body → Left ventricle

• Left atrium → Right atrium → Body → Lungs → Right ventricle → Left ventricle

What is a stroke?

• A stroke is a form of paralysis.

• A stroke is a temporary headache.

• A stroke is a medical condition where blood flow to the brain is interrupted, causing brain damage.

• A stroke is a type of heart disease.

What causes a heart attack?

• Genetic predisposition to high blood pressure

• A heart attack is caused by a blockage of blood flow to the heart, typically due to plaque buildup in the coronary arteries.

• Stress from working too many hours

• High cholesterol from eating too much fruit