Respiration

Question 1

For what is digested food needed for?

Answer 1

Digested food is need to make our body produce energy by respiration

Question 2

Energy is realised in the body by

Answer 2

As heat and the energy is used up by cells

Question 3

What substance is used as the main energy resource in the body

Answer 3

The substance in our body is glucose:

Glucose+oxygen— CO2 + heat (a little bit)+ energy+water

Question 4

Similarities between burning and respiration

Answer 4

The equation for burning and respiration is the same (they both turn into glucose)

Question 5

Difference between burning and respiration

Answer 5

Burning is not controlled progress while respiration is.

Question 6

How does oxygen get into the blood and how is transported

Answer 6

It is transported by the lungs. This means oxygen is converted to oxygenated blood from the alveoli. The oxygenated blood get pumped around the body.

Question 7

Know why the heart has two halves

Answer 7

There are two halves, the left atrium is oxygened and the right atrium is deoxygenated.

Question 8

Know what the different blood vessels in the body are

Answer 8

Arteries:to take blood away from the heart to the organs
Vein:bring deoxygenated blood to the heart from the organs
Capillary: connect arteries to the veins, small substance pass in and out of the blood.

Question 9

Know how exercise affects the pulse rate and breathing rate

Answer 9

Your pulse rate increases and so does you breathing rate to maintain it balanced.

Question 10

Know how body gets rid of carbon dioxide

Answer 10

The blood passes through your lungs picking up oxygen from the alveoli (air sacks), but also leaving CO2 in the alveoli.

Question 11

Anaerobic

Answer 11

Doesn’t include oxygen

Question 12

Aerobic

Answer 12

Includes oxygen, to break down glucose, combines it with oxygen and makes it into carbon dioxide, water and energy.

Question 13

How does oxygen and digested food get from the blood to the cells that need them

Answer 13

The circulatory system take those things to the muscles and cells that need them, in this way they can stay alive and do their job

Question 14

What happens when you breathe?

Answer 14

Our diaphragm contracts and moves downwards, becomes shorten, and the intracoastal muscles contract and move the ribs upwards and outwards.

Question 15

How are the lungs adapted to their job?

Answer 15

• Good blood supply
• Really big surface area as alveoli is very thin and gases can quickly diffuse through it
• Blood vessels in the lungs have very thin wall (1 cell thick)

Question 16

How does gases get into and out of our blood?

Answer 16

The lungs fill with oxygenated air and this oxygen is then transferred into the alveoli.

Question 17

How are the lungs kept clean?

Answer 17

In the trachea and bronchi there are cilia and gobblet cells. Cilia because it has little hairs that clean the windpipe, taking a thin layer of muscles out of your lungs into your lungs into your thought. The mucous it sticky (property) so it helps the lungs trapping bacterias

Question 18

What are the differences between inhaled and exhaled air?

Answer 18

The difference is that the inhaled air is that the air that we breathe and the exhaled air is the air we breathe out.

Question 19

How to detect water vapour?

Answer 19

Breathe into a cold glass and you will see little water droplets form on it—those droplets are water vapour, we get this by condensing water

Question 20

What limewater is used to test for

Answer 20

Carbon dioxide

Question 21

How can we detect the difference between inhaled and exhaled air?

Answer 21

By seeing if limewater goes milky when we exhale through a straw.

Question 22

The effects on the lungs on smokers are?

Answer 22

Their cilia get paralysed so they don’t cough at the night so they wake up with lots of mucous. They get diseases and scars by coughing as they need to get all of at once.

Question 23

What are the intercostal muscles? Contracted, longer or shorter?

Answer 23

They are muscles between the ribs, when they air realises muscles are longer than contracted.