Circulatory system

Question 1

Vessels which carry blood away from the heart

Answer 1

Inferior vena cava

Question 2

Vessels which carry blood toward the heart

Answer 2

Superior vena cava

Question 3

Tiny blood vessels with walls that are only one cell thick

Answer 3

Capillaries

Question 4

Thick wall that divides the heart into two sides

Answer 4

Septum

Question 5

Upper chambers of the heart that receive blood

Answer 5

Left atrium and right atrium

Question 6

Lower chambers of the heart that pump blood out of it

Answer 6

Left and right ventricles

Question 7

Valve between right atrium and right ventricle

Answer 7

Tricuspid valve

Question 8

Valve between the left atrium and the left ventricle

Answer 8

Mitral valve

Question 9

Valves found between the ventricles and blood vessels

Answer 9

Pulmonary and aortic valves

Question 10

Membrane around the heart

Answer 10

Pericardium

Question 11

The only artery in the body rich in carbon dioxide/carries blood from the heart to the lungs

Answer 11

Pulmonary artery

Question 12

The only vein in the body rich in oxygen/brings blood from the lungs to the heart

Answer 12

Pulmonary vein

Question 13

Starting from and ending with the right atrium, trace the flow of blood through the heart and body by putting these in the correct order.

Aorta, pulmonary artery, body cells, pulmonary veins, left ventricle, lungs, right atrium, vena cava, right ventricle, right atrium

Answer 13

1. Right atrium
2. Right ventricle
3. Pulmonary artery
4. Lungs
5. Pulmonary veins
6. Left atrium
7. Left ventricle
8. Aorta
9. Body cells
10. Vena cava
11. Right atrium

Question 14

Starting from and ending with the heart, trace the blood flow through the human circulatory system by putting these in the correct order.

Veins, arterioles, capillaries, venules, heart, arteries,

Answer 14

1. Heart
2. Arteries
3. Arterioles
4. Capillaries
5. Venules
6. Veins
7. Heart

Question 15

Blood vessels that carry blood away from your heart to other parts of your body

Answer 15

Arteries

Question 16

Air sacs where oxygen enters the blood and carbon dioxide leaves the blood

Answer 16

Alveoli

Question 17

Tubes that branch into smaller and smaller tubes

Answer 17

Bronchioles

Question 18

Liquid that carries cells, food, waste, and oxygen in the blood stream

Answer 18

Plasma

Question 19

These form blood clots

Answer 19

Platelets

Question 20

The exchange of oxygen and carbon dioxide in the blood stream

Answer 20

Pulmonary circulation

Question 21

Carry oxygen to the body’s cells

Answer 21

Red blood cells

Question 22

Meaning the whole system

Answer 22

Systemic

Question 23

Blood vessels form a network through the body

Answer 23

Circulation

Question 24

A tube that carries air from the larynx to the lungs

Answer 24

Trachea

Question 25

Blood vessels that take blood from cells back to the heart

Answer 25

Veins

Question 26

These fight bacteria

Answer 26

White blood cells

Question 27

How does the diaphragm work to help you breathe?

Answer 27

It moves down and gets flatter to allow air to get in

Question 28

Which part of your heart is the strongest? Why?

Answer 28

Left ventricle because it pumps all the blood throughout the body

Question 29

What two things happen in the alveoli?

Answer 29

Oxygen enters the blood and carbon dioxide leaves the blood.

Question 30

How do the circulatory and respiratory systems work together?

Answer 30

The RESPIRATORY system gets oxygen into the CIRCULATORY system. Then the CIRCULATORY system takes the oxygen, through the blood stream, to other parts of the body.

Question 31

True or false? Capillaries are only two cells thick.

Answer 31

False. They are only one cell thick.

Question 32

True or false? The pulmonary artery is the only artery in the body rich in oxygen.

Answer 32

False. It is the only artery rich in carbon dioxide.

Question 33

True or false? The tricuspid valve is the valve between the right atrium and the right ventricle.

Answer 33

True

Question 34

The mitral valve is located between what two parts?

Answer 34

Left atrium and left ventricle

Question 35

If you have a low white blood cell count, what is likely to happen?

Answer 35

You might get sick, because white blood cells fight bacteria. If you don't have a lot of white blood cells, bacteria can get in your body and make you sick.

Question 36

Explain the difference between the upper and lower chambers of the heart.

Answer 36

The UPPER chambers (the right and left atria) receive blood, and the LOWER chambers (left and right ventricles) pump blood out of the heart.

Question 37

Where would you find plasma?

Answer 37

In the blood stream.

Question 38

On average, people have about how many red blood cells in their body?

Answer 38

20-25 trillion

Question 39

When a blood vessel is injured, what helps the blood clot and seal the cut?

Answer 39

Platelets

Question 40

What is the largest artery in the body?

Answer 40

The aorta

Question 41

The blood gets oxygen from your -----------.

Answer 41

Lungs

Question 42

What 4 parts make up the blood?

Answer 42

Plasma Red blood cells White blood cells Platelets