1.1 The respiratory system

• Biologie
• Middelbare school
• vwo
• Leerjaar 3

Chapter 1: The respiratory system

What do you remember from last lesson?

The respiratory system 

Name at least 2 reasons why it's better to breathe through your nose

Why it's better to breathe through your nose

--> Hairs and mucus - big and small particles are trapped

--> Mucus lining - makes the air moist

--> Bloodvessels - make the air warm

--> Olfactory cells - check the air

What is the main function of the c-shaped cartilage rings?

C- shaped cartilage rings

1.2 Gas exchange and respiration

Diffusion

movement from a high concentration to a low concentration

What do you need for combustion?

1. Fuel and carbondioxide
2. Oxygen and energy
3. Fuel and oxygen
4. Carbon dioxide and water

Osmosis (diffusion of water)

diffusion of water

-->

<--

<--

<--

Alveoli

Trachea

Bronchiole

Bronchus

gas is exchanged in the alveoli.
What gas enters the blood in the alveoli?

1. Only oxygen
2. Only carbon dioxide
3. Oxygen and nitrogen
4. Carbon dioxide and nitrogen

With which practical activity can you show that there is carbon dioxide in exhaled air?

This part or these parts of the respiratory system contain(s) mucus producing cells and ciliated cells

1. bronchi
2. bronchioli
3. bronchi and bronchioli

Willy: Inhaled air contains more Nitrogen than exhaled air
Bernard: Inhaled air contains less water than exhaled air
Bill: Inhaled air contains more Carbon Dioxide than exhaled air
Who is right?

1. Willy
2. Bernard
3. Bill

which gas isn't used in our body?

1. carbon dioxide
2. oxygen
3. nitrogen
4. water vapour

Put the organs in the correct order

Air enters the body

Gas exchange

Nasal cavity

Alveoli

Pharynx

Larynx

Bronchi

Bronchioles

Trachea

What is the formula of cellular respiration?

glucose + o2 --> co2 + h2o + energy

Bo has a big container, inside of it is an unknown gas.
Bo wants to discover what type of gas it is.
She uses a tube to let some gas escape into a glass of limewater.
After doing this for about a minute the limewater is clear.
What is her conclusion after this experiment?

1. the gas is carbon dioxide
2. the gas is nitrogen
3. the gas is oxygen
4. none of the above

What is combustion?

Which small structure prevents food from entering your windpipe?

1. Uvula
2. Larynx
3. Epiglottis
4. Pharynx

Which letter indicates a bronchioli

1. P
2. Q
3. R

Which cells hold onto the dust you inhale?

1. Olfactory cells
2. Mucus producing cells
3. Nose hairs
4. Ciliated cells

What is the olfactory system used for?

1. The exchange of gas
2. Clearing the nasal cavity of dust particles
3. Used for the sense of smell
4. Clearing the bronchiole of dust particles.

Where in your body do you find the vocal cords?

1. bronchi
2. windpipe
3. pharynx
4. larynx