Unit 4.2 The heart, blood vessels and blood Flashcards Preview

11B1 - AQA Biology Trilogy > Unit 4.2 The heart, blood vessels and blood > Flashcards

Flashcards in Unit 4.2 The heart, blood vessels and blood Deck (112)
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1

Where in the body are the lungs located?

top part of body -thorax

2

Name the sheet of muscle that lies underneath the lungs in the respiratory system

diaphragm

3

What structure makes up the lungs?

alveoli

4

Name the organs that the air flows through in the respiratory system

mouth - wind pipe - bronchus - bronchioles - alveoli

5

The trachea branches into ...

bronchus

6

The bronchus branch into

bronchioles

7

The bronchioles end in the ...

alveoli

8

Another name for the windpipe is

tranchea

9

Which structure inside the respiratory system carries out gas exchange?

alveoli

10

The blood arriving at the alveoli contains a high concentration of which gas?

carbon dioxide

11

The blood arriving at the alveoli contains a low concentration of which gas?

oxygen

12

Blood leaving the alveoli contains a high concentration of which gas?

oxygen

13

Blood leaving the alveoli contains a low concentration of which gas?

carbon dioxide

14

Name the blood vessel that carries blood from the heart to the lungs

pulmonary artery

15

What type of blood is carried in the pulmonary artery?

deoxygenated

16

Name the blood vessel that carries oxygenated blood from the lungs to the heart

pulmonary vein

17

How many chambers are there in the heart?

4

18

Name the top two chambers in the heart

atria (pl) atrium (singular)

19

Name the bottom two chambers of the heart

ventricles

20

which side of the heart pumps to the body?

left

21

which side of the heart pumps blood to the lungs?

right

22

Which side of the heart has a thicker muscle?

left

23

The left side of the heart has a thicker muscular wall, why is this necessary?

pumps blood at greater distance (all over body) thicker muscles generates a stronger force of contraction

24

When gases are exchanged in the lungs how to the gases move (by what process?)

diffusion - from a high to a low concentration

25

What is meant by a double circulatory system?

2 circuits joined together - body and lungs

26

The main artery in the heart that carries blood away from the heart and to the body is called?

aorta

27

The main vein in the heart taking IN blood that has been around the body

vena cava

28

The vena cava contains deoxygenated or oxygenated blood?

deoxygenated blood

29

The heart is an o...

organ

30

The walls of the heart are made mainly of

muscle tissue