Circulatory system

Question 1

What are the three parts of the circulatory system?

Answer 1

Blood
Blood vessels
Heart

Question 2

What are the 4 components of blood?

Answer 2

Red blood cells
White blood cells
Platelets
Plasma

Question 3

What is the purpose of Red blood cells?

Answer 3

The main function of red blood cells is to carry oxygen. It may carry nutrients and a little Corbon Doixide sometimes.

Question 4

Why are the red blood cells red?

Answer 4

Because there is a chemical like a dye called haemoglobin

Question 5

Where does the red blood cells carry blood?

Answer 5

To all all the cells in the body as well as it takes carbon doixide.

Question 6

What is the purpose/function of white blood cells?

Answer 6

They are the police of a body. White blood cells detect, attack and destroy. Anything that is not supposed to be in the body the white blood cells attact and destroy it.

Question 7

What are the two main types of white blood cells?

Answer 7

Lymphocyte
Phagocyte

Question 8

What are Lymphocytes ?

Answer 8

They contain antibodies that are used to destroy invading bacteria, germs ect.

Question 9

What are Phagocytes?

Answer 9

They engulf bacteria. Meaning they eat bacteria.

Question 10

What is the difference between Lymphocyte and Phagocyte?

Answer 10

Lymphocyte kills bacteria while phagocyte engulfs bacteria.

Question 11

What is the difference between White and Red blood cells?

Answer 11

Red blood cells give oxygen while white blood cells attack.

Question 12

What does platelets do?

Answer 12

Platelets cause blood clotting. Platelets cause blood to get sticky and when it gets sticky it becomes blood clot.

Question 13

What do you mean by blood clotting?

Answer 13

A protective layer that forms when you receive a bleeding wound.

Question 14

What is the plasma and what does it do?

Answer 14

Plasma is the liquid part of the blood. It is in charge of transporting the substances in the blood.

Question 15

What are the three blood vessels?

Answer 15

Artery
Vein
Cepillary

Question 16

What does the artery do?

Answer 16

carries blood from the heart to the body except for the pulmonary artery.

Question 17

What does the vein do?

Answer 17

carries blood from the body to the heart except for the pulmonary vein.

Question 18

What does the cepillary too

Answer 18

It aids in the exchange of gasses.

Question 19

What does the heart do?

Answer 19

pumps blood around the body

Question 20

Two types of circulation

Answer 20

1. blood is pumped from the heart to the lungs and back to the heart.

2, blood is pumped from the heart to the body and back to the heart.

Question 21

What are the four chambers (structure of the heart)

Answer 21

The left chambers
The right chambers
The upper chambers
The lower chambers

Question 22

Why are there left and right chambers?

Answer 22

to prevent the mixing of oxygenated and deoxygenated blood

Question 23

Where does deoxygenated blood and oxygenated blood travel?

Answer 23

Deoxygenated blood travels through the right chambers

Oxygenated blood travels through the left chambers

Question 24

What is the purpose of the valves

Answer 24

Valves seperate the upper chambers from the lower chambers on each side

Question 25

Which other place does valves occur?

Answer 25

At the junctions of the major vessels and the heart. These valves maintain the flow of the blood in a particular direction as they do in veins.

Question 26

What is the purpose of muscles?

Answer 26

The walls of the hearts chambers consist of cardiac muscle. This muscle has the special feature of contracting and relaxing repeatedly without fatigue unlike the muscles of the arms, for example.

Question 27

How many times does the heart contract per minute?

Answer 27

The heart contracts approximately 70 times a minute through the life of a person

Question 28

Are the walls of the artria less muscular than the walls of the ventricles?

Answer 28

considerably, yes.

Question 29

Which ventricle have the most muscular walls?

Answer 29

:Left ventricle. This chamber has to create the greatest pressure to push blood around the body to all various parts

Question 30

Where does the right ventricle pump blood?

Answer 30

Only to the nearby lungs.

Question 31

What tissue is the heart made from?

Answer 31

Cardiac Muscle tissues and other connective tissues

Question 32

What structures inside the heart keeps the blood flowing in one direction

Answer 32

Valves

Question 33

Explain why the walls of the ventricles are so much thicker than those of the atria.

Answer 33

The ventricles of the heart have thicker muscular walls than the atria. This is because blood is pumped out of the heart at greater pressure from these chambers compared to the atria.

Question 34

What is double circulation?

Answer 34

Blood travels through the heart twice in one complete circulation of the body.

Question 34

What is double circulation?

Answer 34

Blood travels through the heart twice in one complete circulation of the body.

Question 35

Systemic Circulation

Answer 35

Circulation of blood from the heart to the body and back to the heart

Question 36

What is pulmonary circulation?

Answer 36

Circulation of blood from the heart to the lungs and back to the heart

Question 37

What are two advantages of double circulation?

Answer 37

1. Oxygenated blood and deoxygenated blood are kept seperate. 2. The left ventricle pumps blood at a much higher pressure to the systemic circulation than the right ventricle pumps blood to the lungs.

Question 38

What is tissue fluid?

Answer 38

The fluid that surrounds the cells.

Question 39

How is a tissue fluid formed?

Answer 39

It is formed by filtration of blood plasma. The liquid portion of blood that leave the cepillaries and bathes the body cells form the tissue fluid.

Question 40

What is a lymph?

Answer 40

It is a fluid found in the lymphatic system. It drains from tissue fluid into the lymph vessel. Lymph is colourless, rich in lipids and contains many white blood cells.