Circulatory System

Question 1

How many different types of blood vessels are there and what are they called?

Answer 1

1.arteries
2.veins
3.capillaries

Question 2

Describe arteries (4)

Answer 2

1. Large blood vessels with thick walls
2. Carry oxygenated blood away from the heart except for the pulmonary artery
3. No valves as high pressure prevents back flow
4. Pulse is heart beat in artery

Question 3

Describe capillaries (3)

Answer 3

1. Small blood vessels linking arteries and veins
   2.Walls are only one cell thick
2. Easy for substances eg. Oxegyn to diffuse from blood into cells and waste to pass from cells to blood

Question 4

Describe veins (3)

Answer 4

1 Thinner walls than arteries
2. Carry deoxygenated blood to the heart except for the pulmonary vein.
3. Valves stop backflow

Question 5

Name the four jobs blood does

Answer 5

1. Transports oxygen, carbon dioxide, and water vapour.
2. Transport food, waste, and hormones.
3. Transports heat and keeps her body temperature at 37°.
4. Defend against disease.

Question 6

Name the two things blood is made up of and the percentages

Answer 6

Blood is 55% plasma and 45% cells

Question 7

What are the three type types of blood cells?

Answer 7

1. Red blood cells.
2. White blood cells.
3. Platelets.

Question 8

What do red blood cells do?

Answer 8

Transport oxygen

Question 9

What do white blood cells do?

Answer 9

provide protect protection by making antibodies

Question 10

What do platelets do?

Answer 10

Clot blood

Question 11

When matured which blood cells don’t have a nucleus

Answer 11

Red blood cells and platelets

Question 12

Name the three main parts of the heart

Answer 12

1. It is divided by the septum.
   2 it is split into four chambers( two atria, two ventricles)
   3 semilunar valves allow blood to flow out of heart into aorta and pulmonary artery

Question 14

Label the heart

Answer 14

Good job!

Question 15

where does oxygenated blood enter in the heart?

Answer 15

It enters through the pulmonary vein

Question 16

Where does oxygenated blood go after entering the heart?

Answer 16

Through the left atrium into the left ventricle

Question 17

What happens to blood in the left ventricle?

Answer 17

The blood is pushed through the aorta and around the body

Question 18

Which side of the heart has oxygenated blood?

Answer 18

The left side

Question 19

Which side of the heart has a thicker wall and why?

Answer 19

The left side has a thicker wall as it has more pressure on it with more blood

Question 20

Where does deoxygenated blood enter through the right atrium?

Answer 20

The deoxygenated blood enters through the vena cava and into the right atrium

Question 21

What happens after blood enters the right atrium?

Answer 21

It is pushed into the right ventricle and then push out the pulmonary artery to be pumped towards the lungs

Question 22

Where does oxygenated blood go?

Answer 22

The oxygenated blood goes around the body

Question 23

Where does deoxygenated blood go?

Answer 23

It goes to the heart in order to be pumped to the lungs and become oxygenated

Question 24

What is the average heart rate?

Answer 24

72 bpm

Question 26

Name five factors that can increase high blood pressure

Answer 26

1. Smoking. 2. Obesity. 3. Lack of physical activity. 4. High salt diet. 5. Alcohol consumption.

Question 27

What is blood pressure?

Answer 27

The measurement of how easily the heart can pump oxygen and nutrients to their destination

Question 28

What are the functions of the circulatory system?

Answer 28

- To transport gases, nutrients, hormones waste and heat - Temperature regulation as blood moves around the body heat is transferred between organs - Protection, fight infection and prevents blood loss

Question 29

What does plasma do?

Answer 29

It transports dissolved gases, nutrients, hormones, waste, and heat

Question 30

Describe blood flow

Answer 30

On back of sheet

Question 31

What do red blood cells do?

Answer 31

Transport oxygen by forming a weak bond with haemoglobin to create oxyhaemoglobin, this bond is easily broken to release oxygen

Question 32

What do white blood cells do?

Answer 32

Fight infection by ingesting disease causing microbes or by producing special chemicals called antibodies

Question 33

Draw the three types of blood cells

Answer 33

Look it up

Question 34

What type of circulation do we have?

Answer 34

Double circulation

Question 35

What is a double circulatory system?

Answer 35

Blood system where blood flows in two separate pathways around the body

Question 36

What are the two advantages of a double circulatory system?

Answer 36

- Quick delivery of oxygen and nutrients to the body - Blood can be carried to certain areas

Question 37

What are the two circuits in our bodies?

Answer 37

The pulmonary circuit between the lungs and the heart The systemic circuit between the heart and the rest of the body

Question 38

What does the plasma do?

Answer 38

Transports dissolved gases, nutrients, hormones, waste and heat

Question 39

Where is heat from the body transferred from?

Answer 39

Heat comes from cellular respiration in your cells, blood pics of the heat from the body cells and carries it around the body