Circulatory System

Question 1

What is the primary function of the circulatory system?

Answer 1

To transport nutrients, gases, hormones, and waste products throughout the body.

Question 2

True or False: The heart has four chambers.

Answer 2

True

Question 3

Fill in the blank: The two upper chambers of the heart are called __________.

Answer 3

atria

Question 4

What are the two main types of circulation in the circulatory system?

Answer 4

Pulmonary circulation and systemic circulation.

Question 5

What type of blood vessel carries oxygenated blood away from the heart?

Answer 5

Arteries

Question 6

Multiple Choice: Which of the following is NOT a component of blood? A) Red blood cells B) Plasma C) Neurons D) White blood cells

Answer 6

C) Neurons

Question 7

What is the role of red blood cells?

Answer 7

To transport oxygen from the lungs to the body and carbon dioxide from the body back to the lungs.

Question 8

True or False: Veins carry deoxygenated blood back to the heart.

Answer 8

True

Question 9

Fill in the blank: The largest artery in the body is the __________.

Answer 9

aorta

Question 10

What is the function of capillaries?

Answer 10

To allow the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues.

Question 11

Multiple Choice: Which part of the heart is responsible for pumping blood to the lungs? A) Left atrium B) Right ventricle C) Left ventricle D) Right atrium

Answer 11

B) Right ventricle

Question 12

What is the function of valves in the heart?

Answer 12

To prevent the backflow of blood and ensure it flows in one direction.

Question 13

True or False: The pulmonary arteries carry oxygenated blood.

Answer 13

False

Question 14

Fill in the blank: The liquid component of blood is called __________.

Answer 14

plasma

Question 15

What is the role of platelets in the blood?

Answer 15

To help with blood clotting.

Question 16

Multiple Choice: Which type of blood vessel has thin walls and valves? A) Arteries B) Veins C) Capillaries D) None of the above

Answer 16

B) Veins

Question 17

What is systemic circulation?

Answer 17

The circulation of blood from the heart to the rest of the body and back.

Question 18

True or False: The heart is located in the left side of the chest.

Answer 18

False

Question 19

Fill in the blank: The heart’s natural pacemaker is called the __________.

Answer 19

sinoatrial node

Question 20

What does blood pressure measure?

Answer 20

The force of blood against the walls of the arteries.

Question 21

Multiple Choice: What causes the heartbeat? A) Electrical signals B) Muscle contractions C) Both A and B D) None of the above

Answer 21

C) Both A and B

Question 22

What are the two phases of the cardiac cycle?

Answer 22

Systole and diastole.

Question 23

True or False: The coronary arteries supply blood to the heart muscle itself.

Answer 23

True

Question 24

Fill in the blank: The main function of the lymphatic system is to __________.

Answer 24

help maintain fluid balance and support the immune system.

Question 25

What is the role of the aorta in the circulatory system?

Answer 25

To carry oxygenated blood from the heart to the rest of the body.

Question 26

Multiple Choice: Which type of blood cell is primarily involved in immune response? A) Red blood cells B) White blood cells C) Platelets D) Plasma

Answer 26

B) White blood cells