Science 6

Which of the following is not true about the heart?

• The heart is a muscular organ.

• Gas exchange happens in the heart.

• The primary function of the heart is to pump blood.

• The heart is composed of atria in the upper part and ventricles in the lower part.

Which of the following is true of the veins?

• The veins carry nutrients throughout the body.

• The veins are blood vessels that always carry oxygen-rich blood.

• The veins are blood vessels that always carry oxygen-poor blood.

• The veins are blood vessels that always carry blood toward the heart.

Which of the following activities could impact the organ systems negatively?

• By always staying up late.

• Through having adequate amounts of meat and vegetables.

• By means of performing regular exercises such jogging and brisk walking.

• By having regular check-ups by medical professionals and engaging in health forums.

Which of the following is true about leukocytes?

• They carry oxygen.

• They transport CO₂.

• They flight infections.

• They work for blood clotting.

Which of the following structures divides the left and right sides of the heart?

• atria

• valves

• ventricles

• septum

Which of the following best describes heart valves?

• They divide the heart into several chambers.

• They help the heart in pumping the blood to the body

• They ensure that the heart performs its function of pumping blood.

• The valves are structures inside the heart that prevent the blood from flowing back from where it came from.

Which of the following is mostly associated with cardiovascular diseases?

• minerals

• vitamins

• saturated fats

• unsaturated fats

Which of the following best describes pulmonary circulation

• it is the flow of blood from the heart to the lungs.

• it is the flow of blood from the heart to all parts of the body.

• it is the flow of blood from the lower parts of the body to the heart.

• it is the flow of blood that happens inside the four chambers of the heart.

Which of the following could best promote a healthier circulatory system?

• Having a sedentary lifestyle.

• Consuming processed food.

• Reading about the latest health news.

• Performing proper and regular exercises

Which of the following should be eaten the least to avoid cardiovascular diseases?

• cabbage

• mango

• fried chicken

• steamed fish