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Biology Yr9 > Breathing And Respiration > Flashcards

Flashcards in Breathing And Respiration Deck (16):
1

Respiration occurs in...

All animal and plant cells

2

The respiration word equation?

Glucose + oxygen -> water + carbon dioxide + energy
-Delivered through digestive system
-delivered through respiratory system
-waste products
-needed by cell

3

Carbon dioxide can be detected using __________ which turns from _________ to __________ in the presence of carbon dioxide.

Limewater
Colourless to milky/cloudy

4

Carbon dioxide can be detected using Hydrogen carbonate indicator (bicarbonate indicator) which turns from
red/orange to ____________ in the presence of carbon dioxide
Red/orange to ____________ when carbon dioxide is removed

Yellow
Purple

5

Label the respiratory system

Trachea
Nasal passage
Bronchus
Mouth
Bronchioles
Larynx (voice box)
Pleural membrane
Ribs
Bronchiole
Lung
Heart
Diaphragm
Intercostal muscles
Alveoli
Surrounded by blood capillaries

6

The nasal passage is covered with small hairs. Why is it better to breathe through your nose than mouth?

Hairs will catch the dirt in the air and bacteria.
Breathing through your nose gives more opportunity to do this.

7

Why are the ribs important?

Ribs protect the lungs

8

The trachea and bronchioles consist of tubes containing rings of cartilage. What do you think the function for these rings of cartilage is?

Rings of hard cartilage insure the airways stays open and doesn’t collapse in (like a straw)

9

There are many small hairs called cilia lining the tubes of bronchioles. What are they for?

Cilia catch dirt and bacteria

10

When you exhale...
(6)

•oxygen is taken from the air into your blood vessels surrounding your mouth
•the blood will lose waste carbon dioxide into the air in your lungs
•your diaphragm relaxes and moves up. Muscles relax and rib cage moves down.
•the space in your chest gets smaller
•the air is squeezed out of your lungs and you breathe out
•air moves through your nose and mouth

11

When we inhale the diaphragm moves _________, and the rib cage moves ________ and ________
When we exhale the diaphragm moves _________, and the rib cage moves _________ and __________

Down up out
Up down in

12

Lung volume.
Tidal volume =
Vital capacity =

Volume of air breathed in or out in one normal breath
The maximum volume of air the can be breathed out after breathing in as much you can

13

Why is the air you breathe out warmer?

The temperature of exhaled air is higher than room temperature,this is because the body is at 37c and hets air in our lungs.

14

Where in the lungs does gas exchange take place?

The alveoli

15

Do you use all the oxygen you breathe in?
How do you know this?

No
You only use 5% of the oxygen you breathe in.
Because of breathing tests

16

Name the chemical in cigarette smoke that is addictive.

Nicotine