Circulatory System and Blood Components Quiz

Question 1

Which white blood cell type is the most common in the human body?

Accepted Answer

Neutrophils

Answer

Monocytes

Answer

Lymphocytes

Answer

Eosinophils

Question 2

Which type of blood vessel carries oxygenated blood away from the heart to the body's tissues?

Accepted Answer

Arteries

Answer

Veins

Answer

Capillaries

Answer

Lymphatic vessels

Question 3

Which of the following is NOT a function of the circulatory system?

Accepted Answer

Elimination of solid waste

Answer

Transport of oxygen and nutrients

Answer

Regulation of body temperature

Answer

Maintenance of pH balance

Question 4

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

Accepted Answer

Artery

Answer

Arteriole

Answer

Capillary

Answer

Vein

Question 5

Which of the following blood cells is responsible for fighting infection?

Accepted Answer

White blood cells

Answer

Red blood cells

Answer

Platelets

Answer

Plasma

Question 6

What is the term for the rhythmic contraction and relaxation of the heart?

Accepted Answer

Cardiac cycle

Answer

Respiration

Answer

Digestion

Answer

Metabolism

Question 7

Which of the following is a modifiable risk factor for cardiovascular disease?

Accepted Answer

Smoking

Answer

Family history

Answer

Gender

Answer

Age

Question 8

What is the primary function of hemoglobin in red blood cells?

Accepted Answer

Oxygen transport

Answer

Nutrient transport

Answer

Carbon dioxide transport

Answer

Hormone production

Question 9

Which blood type is known as the 'universal donor'?

Accepted Answer

O negative

Answer

A positive

Answer

AB positive

Answer

B negative

Question 10

What is the name of the valve that prevents backflow of blood into the left atrium?

Accepted Answer

Mitral valve

Answer

Tricuspid valve

Answer

Pulmonary valve

Answer

Aortic valve

Question 11

Which of the following is NOT a type of white blood cell?

Accepted Answer

Erythrocyte

Answer

Lymphocyte

Answer

Eosinophil

Answer

Neutrophil

Question 12

What is the liquid portion of blood that transports dissolved substances?

Accepted Answer

Plasma

Answer

Platelets

Answer

Leukocytes

Answer

Erythrocytes

Question 13

Which blood component is responsible for carrying oxygen to body tissues?

Accepted Answer

Red blood cells

Answer

White blood cells

Answer

Plasma

Answer

Platelets

Question 14

What is the role of the heart's valves?

Accepted Answer

Prevent backflow of blood

Answer

Pump blood through the arteries

Answer

Oxygenate blood

Answer

Regulate blood pressure

Question 15

Which blood vessel carries blood away from the heart?

Accepted Answer

Arteries

Answer

Veins

Answer

Lymphatic vessels

Answer

Capillaries

Question 16

Which pigment in red blood cells binds to oxygen?

Accepted Answer

Hemoglobin

Answer

Myoglobin

Answer

Cytochrome

Answer

Chlorophyll

Question 17

Which white blood cell is primarily involved in combating bacterial infections?

Accepted Answer

Neutrophils

Answer

Lymphocytes

Answer

Basophils

Answer

Eosinophils

Question 18

Which is the main function of plasma in the blood?

Accepted Answer

Transport nutrients, hormones, and waste products

Answer

Carry oxygen to tissues

Answer

Clot blood

Answer

Fight infection

Question 19

Which of the following is NOT a function of platelets?

Accepted Answer

Transporting substances

Answer

Preventing bleeding

Answer

Initiating wound healing

Answer

Forming clots

Question 20

What is the process called when substances move between blood and surrounding tissues?

Accepted Answer

Diffusion

Answer

Osmosis

Answer

Filtration

Answer

Phagocytosis

Question 21

Which organ filters waste products from the blood?

Accepted Answer

Kidneys

Answer

Pancreas

Answer

Spleen

Answer

Liver

Question 22

What is the term for high blood pressure?

Accepted Answer

Hypertension

Answer

Bradycardia

Answer

Tachycardia

Answer

Hypotension

Question 23

Which of the following is the main artery that carries oxygenated blood away from the heart to the rest of the body?

Accepted Answer

Aorta

Answer

Carotid artery

Answer

Pulmonary artery

Answer

Femoral artery

Question 24

Which type of blood cell contains hemoglobin and is responsible for carrying oxygen?

Accepted Answer

Red blood cell

Answer

Lymphocyte

Answer

White blood cell

Answer

Platelet

Question 25

Which of the following chambers of the heart receives oxygenated blood from the lungs?

Accepted Answer

Left atrium

Answer

Right atrium

Answer

Right ventricle

Answer

Left ventricle

Question 26

What is the primary function of the pulmonary circulation?

Accepted Answer

To exchange carbon dioxide for oxygen in the lungs

Answer

To transport deoxygenated blood to the heart

Answer

To transport oxygenated blood to the body

Question 27

Which blood type is considered the "universal donor" because it can be given to individuals with any blood type?

Accepted Answer

O negative

Answer

AB negative

Answer

A positive

Answer

B positive

Question 28

What is the function of the lymphatic system?

Accepted Answer

To collect and return fluid and waste products to the bloodstream

Answer

To fight infection

Answer

To transport oxygen and nutrients to cells

Question 29

Which type of blood vessel carries blood away from the heart?

Accepted Answer

Artery

Answer

Pulmonary vein

Answer

Capillary

Answer

Vena cava

Question 30

What is the name of the protein in blood plasma that forms the network of fibers in a blood clot?

Accepted Answer

Fibrinogen

Answer

Globulin

Answer

Albumin

Answer

Hemoglobin

Question 31

Which organ is responsible for filtering waste products from the blood and producing white blood cells?

Accepted Answer

Spleen

Answer

Kidney

Answer

Liver

Answer

Pancreas

Question 32

What is the name of the condition in which plaque builds up in the arteries, narrowing and hardening them?

Accepted Answer

Atherosclerosis

Answer

Arrhythmia

Answer

Hypertension

Answer

Anemia

Question 33

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

Accepted Answer

Artery

Answer

Capillary

Answer

Vein

Question 34

What is the primary function of red blood cells?

Accepted Answer

Transport oxygen

Answer

Help with blood clotting

Answer

Fight infection

Answer

Transport nutrients

Question 35

Which protein is essential for the formation of blood clots?

Accepted Answer

Fibrinogen

Answer

Leukocytes

Answer

Platelets

Answer

Hemoglobin

Question 36

What is the typical hematocrit range for adults?

Accepted Answer

40-52%

Answer

65-75%

Answer

25-35%

Answer

55-65%

Question 37

Which of the following is a common symptom of anemia?

Accepted Answer

Fatigue

Answer

Cough

Answer

Fever

Answer

Rash

Question 38

What is the primary purpose of a blood transfusion?

Accepted Answer

To replace lost or damaged blood.

Answer

To lower blood pressure

Answer

To treat cancer

Answer

To boost the immune system

Question 39

Which of the following can be a risk factor for developing a blood clot?

Accepted Answer

Immobility

Answer

Normal blood pressure

Answer

High intake of fruits and vegetables

Answer

Regular exercise

Question 40

What is the primary function of the circulatory system?

Accepted Answer

Transporting oxygen, nutrients, and waste products throughout the body.

Answer

Regulating body temperature.

Answer

Producing blood cells.

Answer

Filtering waste products from the blood.

Question 41

Which type of blood vessel carries blood away from the heart?

Accepted Answer

Artery

Answer

Capillary

Answer

Lymphatic vessel

Answer

Vein

Question 42

Which muscular organ pumps blood throughout the body?

Accepted Answer

Heart

Answer

Liver

Answer

Stomach

Answer

Lungs

Question 43

Which blood cell is primarily responsible for carrying oxygen?

Accepted Answer

Red blood cell

Answer

White blood cell

Answer

Plasma cell

Answer

Platelet

Question 44

What is the main function of platelets?

Accepted Answer

To help stop bleeding by forming blood clots.

Answer

To carry oxygen.

Answer

To regulate blood sugar levels.

Answer

To fight infection.

Question 45

What is the fluid component of blood called?

Accepted Answer

Plasma

Answer

Erythrocytes

Answer

Leukocytes

Answer

Serum

Question 46

Which of the following is a significant risk factor for cardiovascular disease?

Accepted Answer

High blood pressure

Answer

Healthy diet

Answer

Frequent exercise

Answer

Low blood sugar

Question 47

What is the process of blood clotting called?

Accepted Answer

Coagulation

Answer

Phagocytosis

Answer

Agglutination

Answer

Hemolysis

Question 48

Which blood type is considered the "universal donor" because it can be safely given to most individuals?

Accepted Answer

O negative

Answer

B negative

Answer

AB positive

Answer

A positive

Question 49

Which of the following is NOT a primary function of the circulatory system?

Accepted Answer

Production of hormones

Answer

Regulation of body temperature

Answer

Removal of waste products from the body

Answer

Transport of oxygen to the body's cells

Question 50

The four chambers of the heart work together to:

Accepted Answer

Pump blood throughout the circulatory system

Answer

Store blood for emergencies

Answer

Filter waste from the blood

Answer

Produce blood cells

Question 51

Which type of blood vessel carries oxygen-rich blood away from the heart?

Accepted Answer

Arteries

Answer

Veins

Answer

Capillaries

Answer

Lymphatic vessels

Question 52

What is the primary function of red blood cells?

Accepted Answer

Transport oxygen to the body's cells

Answer

Clot blood to stop bleeding

Answer

Produce antibodies to fight infection

Answer

Fight infection directly

Question 53

Which component of blood is responsible for blood clotting?

Accepted Answer

Platelets

Answer

White blood cells

Answer

Plasma

Answer

Red blood cells

Question 54

A patient with a low white blood cell count may be more susceptible to:

Accepted Answer

Infections

Answer

Blood clots

Answer

Bleeding

Answer

Anemia

Question 55

The liquid portion of blood is called:

Accepted Answer

Plasma

Answer

Lymph

Answer

Hemoglobin

Answer

Serum

Question 56

Which of the following describes the systemic circulatory route?

Accepted Answer

Blood flow from the heart to the body's organs and tissues

Answer

Blood flow from the lungs to the heart

Answer

Blood flow from the heart to the right arm

Answer

Blood flow from the heart to the lungs

Question 57

For a complete blood count (CBC), a phlebotomist would most likely draw blood from a:

Accepted Answer

Vein

Answer

Artery

Answer

Lymphatic vessel

Answer

Capillary

Question 58

Why is it crucial for a phlebotomist to understand the circulatory system?

Accepted Answer

To ensure safe and accurate blood collection, minimizing patient risk

Answer

To perform surgery

Answer

To diagnose diseases