Circulatory System

Question 1

What is the primary function of the circulatory system?

Answer 1

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

Question 2

True or False: The heart is a muscular organ that pumps blood throughout the body.

Answer 2

True

Question 3

What are the main components of blood?

Answer 3

Red blood cells, white blood cells, platelets, and plasma.

Question 4

Fill in the blank: The _______ carries oxygenated blood away from the heart.

Answer 4

Aorta

Question 5

What are the four main chambers of the heart?

Answer 5

Right atrium, right ventricle, left atrium, left ventricle.

Question 6

Which blood type is known as the universal donor?

Answer 6

Type O-

Question 7

Multiple Choice: Which blood type has A antigens on the surface of its red blood cells? A) Type A B) Type B C) Type AB D) Type O

Answer 7

A) Type A

Question 8

What is the role of platelets in the blood?

Answer 8

To help with blood clotting.

Question 9

True or False: The right side of the heart receives oxygenated blood from the lungs.

Answer 9

False

Question 10

What is the average resting heart rate for adults?

Answer 10

60 to 100 beats per minute.

Question 11

Fill in the blank: Blood is composed of _______ and formed elements.

Answer 11

plasma

Question 12

Which blood type is considered the universal recipient?

Answer 12

Type AB+

Question 13

Multiple Choice: What type of blood vessel carries blood back to the heart? A) Arteries B) Veins C) Capillaries D) None of the above

Answer 13

B) Veins

Question 14

What is the function of the valves in the heart?

Answer 14

To prevent backflow of blood.

Question 15

True or False: The left ventricle pumps blood to the lungs.

Answer 15

False

Question 16

What is hemoglobin?

Answer 16

A protein in red blood cells that carries oxygen.

Question 17

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

Answer 17

Aorta

Question 18

What is the function of the pulmonary circulation?

Answer 18

To carry deoxygenated blood from the heart to the lungs and return oxygenated blood back to the heart.

Question 19

Multiple Choice: Which component of blood is primarily responsible for immune response? A) Red blood cells B) White blood cells C) Plasma D) Platelets

Answer 19

B) White blood cells

Question 20

What is the role of the sinoatrial (SA) node in the heart?

Answer 20

It acts as the natural pacemaker, initiating the heartbeat.

Question 21

True or False: Blood type compatibility is crucial for safe blood transfusions.

Answer 21

True

Question 22

What is the average volume of blood in an adult human?

Answer 22

About 5 to 6 liters.

Question 23

Fill in the blank: The _______ is the muscular wall of the heart.

Answer 23

Myocardium

Question 24

What are the two main types of circulation in the body?

Answer 24

Systemic circulation and pulmonary circulation.

Question 25

Multiple Choice: What happens if a person receives an incompatible blood type during a transfusion? A) Nothing B) Hemolysis C) Increased energy D) Improved health

Answer 25

B) Hemolysis

Question 26

What is the name of the blood vessels that supply blood to the heart muscle?

Answer 26

Coronary arteries.

Question 27

True or False: Arteries carry oxygen-rich blood, while veins carry oxygen-poor blood.

Answer 27

True

Question 28

Fill in the blank: The _______ separates the right and left sides of the heart.

Answer 28

Septum

Question 29

What is the function of capillaries?

Answer 29

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

Question 30

Multiple Choice: Which of the following is NOT a blood group? A) A B) B C) C D) AB

Answer 30

C) C

Question 31

What is the significance of the Rh factor in blood types?

Answer 31

It determines whether blood is positive or negative and is important for transfusions and pregnancy.

Question 32

True or False: Blood pressure is the force exerted by circulating blood on the walls of blood vessels.

Answer 32

True

Question 33

Fill in the blank: The _______ is the part of the heart that receives deoxygenated blood from the body.

Answer 33

Right atrium

Question 34

What is the normal range for systolic blood pressure in adults?

Answer 34

90 to 120 mmHg.

Question 35

Multiple Choice: Which part of the heart pumps blood to the body? A) Right atrium B) Left atrium C) Right ventricle D) Left ventricle

Answer 35

D) Left ventricle

Question 36

What is the function of the aortic valve?

Answer 36

To prevent backflow of blood from the aorta into the left ventricle.

Question 37

True or False: Blood transfusions can only be performed with the same blood type.

Answer 37

False

Question 38

Fill in the blank: The _______ is the layer of tissue that lines the heart.

Answer 38

Endocardium

Question 39

What is the role of the vena cavae in the circulatory system?

Answer 39

To return deoxygenated blood from the body to the right atrium of the heart.

Question 40

Multiple Choice: What is the main purpose of the circulatory system? A) Digestion B) Transport C) Respiration D) Excretion

Answer 40

B) Transport

Question 41

What is the significance of the coronary circulation?

Answer 41

It provides blood supply to the heart muscle itself.

Question 42

True or False: The left side of the heart is responsible for pumping blood to the lungs.

Answer 42

False

Question 43

Fill in the blank: The _______ is the structure that connects the atria and ventricles.

Answer 43

Atrioventricular valve