Circulation

Question 1

heart

Answer 1

Pumps oxygenised blood around the body

Question 2

Blood vessel

Answer 2

carry blood away from the heart

Question 3

Arteries

Answer 3

• Carry blood away from the heart towards other organs

Question 4

Veins

Answer 4

carry blood towards the heart

Question 5

What is the function of the Capillaries?

Answer 5

carry blood through organs

Question 6

Blood

Answer 6

a transport medium

Question 7

How is this heart similar and different to humans?

Answer 7

Similar - has atrium

            - has a ventricle 
            - Blood enters via a vein and leave through artery 

Difference- Only one valve

              - no septum 
             - fewer vessels

Question 8

Arteries - is the blood oxygenated or deoxygenated

Answer 8

Oxygenated except pulmonary artery and umbilical artery

Question 9

Arteries - blood pressure

Answer 9

high

Question 10

Arteries - wall thickness

Answer 10

high

Question 11

Arteries - lumen size

Answer 11

small

Question 12

Arteries - valves present

Answer 12

no

Question 13

Example of Arteries?

Answer 13

Aorta

Question 14

Veins - is the blood usually oxygenated or deoxygenated?

Answer 14

Deoxygenated except pulmonary vein and umbilical vein

Question 15

Veins- blood presure

Answer 15

Lowest

Question 16

Veins - wall thickness

Answer 16

Thin

Question 17

Veins - Lumen size

Answer 17

Larger

Question 18

Are valves present in veins?

Answer 18

Yes

Question 19

What is an example of a vein?

Answer 19

Vena cava

Question 20

Capillary- blood direction

Answer 20

Between organs

Question 21

Veins - blood direction

Answer 21

to the heart

Question 22

Capilarites - blood oxyganated or deoxygenated

Answer 22

Oxygenated and deoxygenated

Question 23

Capilaries - blood presuure

Answer 23

low

Question 24

Capillaries - wall thickness

Answer 24

very thin

Question 25

Capillaries - Lumen size

Answer 25

very small

Question 26

Capillaries - valves present?

Answer 26

no

Question 27

What is an example of a Capillary

Answer 27

- Alveoli

Question 28

Which of the blood vessels carries blood containing the most oxygen

Answer 28

Aorta

Question 29

Which of the blood vessels carries blood at the lowest pressure?

Answer 29

Veins

Question 30

Which of these blood vessels is most suited for gas exchange? - explain your answer

Answer 30

capillary - because it is one cell thick - short diffusion distance

Question 31

What can destroy bacteria in the blood and circulatory system?

Answer 31

Plasma, platlets

Question 32

What can carries carbon dioxide in the blood and circulatory system?

Answer 32

Capillary and vein

Question 33

What Pumps blood around the body?

Answer 33

Heart

Question 34

Carries blood to organs in the blood and circulatory system?

Answer 34

arteries and capillaries

Question 35

What carries blood from the organs in the blood and circulatory system?

Answer 35

veins

Question 36

What carries oxygen in the blood and circulatory system?

Answer 36

red blood cells

Question 37

Name the type of blood vessel which has valves.

Answer 37

vein

Question 38

Compare the heart to other muscles in the body (i.e. what makes the heart muscle different to the rest of the body?)

Answer 38

it is made of cardiac muscle - never get tired - involuntary

Question 39

What does the word pulmonary mean?

Answer 39

related to the lungs

Question 40

What is the left and right side of the heart divided by?

Answer 40

septum

Question 41

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

Answer 41

left - needs to pump blood at a higher pressure

Question 42

What is the role of valves?

Answer 42

to prevent backflow of blood

Question 43

Describe the Plasma

Answer 43

Liquid part of blood, mainly water

Question 44

Waht is the function of the plasma?

Answer 44

- carries nutients (glucose, amino acids) - Carries waste product (carbon dioxide and water) - Distribute heat

Question 45

Describe the Platlets

Answer 45

the smallest cell - fragments of other cells

Question 46

What is the function of the platlets?

Answer 46

Release chemicals to make blood clot when we cut ourselves

Question 47

What bind to oxygen in our red blood cells?

Answer 47

Haemoglobin

Question 48

What are the function of coronary arteries?

Answer 48

supply the heart muscles with oxygen and nutrient

Question 49

What is the name of the vessel that oxygenated blood leaves the heart from?

Answer 49

Aorta

Question 50

What is the name of the vessel that deoxygenated blood leaves the heart from?

Answer 50

pulmonary artery

Question 51

Which blood vessel returns blood from the rest of the body to the heart?

Answer 51

vena cava

Question 52

What is unusual about the pulmonary artery and pulmonary vein?

Answer 52

arteries usually carry oxygenated blood where as the pulmonary artery carries deoxygenated/ vein usually deoxygenated where as the pulmonary vein carries oxygenated.

Question 53

Normal resting heat rate?

Answer 53

70bpm

Question 54

pulmonary circulation

Answer 54

deoxygenated blood is pumped to the lungs and oxygenated blood returns back to the heart

Question 55

Systemic circulation

Answer 55

oxygenised blood is pumped to all the organs of the body and deoxygenased blood returns back to the heart.

Question 56

Short term effect in exercise

Answer 56

- increased rate of breathing | - increase in tidal volume

Question 57

Long term effect on exercise

Answer 57

- strong diaphragm + intercostal muscles - increased number of alveoli - increased in vital capillary - increased gas exchange - more oxygen - more efficient removal of co2

Question 58

Hepatic portal vein

Answer 58

takes blood to the lungs

Question 59

hepatic vein

Answer 59

returns blood to the heart

Question 60

hepatic artery

Answer 60

oxygenated blood to the liver