Breathing Circulation Respiration L1.

Breathing, Circulation and Respiration 

Lesson 1

Respiration    

• A while ago we learnt about ___ ______.  Each of these life processes needs ENERGY.  ___________ is the process our bodies use to produce this energy:                     

•  Glucose + oxygen>> water + carbon dioxide + ENERGY
  

• The glucose we need comes from ______ and the oxygen from _________.  Water and carbon dioxide are breathed out.  The MAIN product of this equation is _________.

• KEYWORDS– breathing, energy, Mrs Gren, respiration, food
  
  

Inhaled gas
78-79% Nitrogen
21% Oxygen 
0.03-4% Carbon Dioxide

Trace amounts other gases, H2O, Argon 

Exhaled Gas

79% Nitrogen
16% Oxygen
4% Carbon Dioxide

Trace amounts other gases, H2O, Argon 

Multiple Select

What % of Oxygen do we use when we have inhaled air?

• 6%

• 5%

• 4%

• 0%

Fill in the Blank

Does the amount of Carbon Dioxide increase or decrease when you exhale?

Multiple Choice

What is the % of Nitrogen inhaled?

• 79%

• 100%

• 69%

• 59%

Multiple Choice

What % of Nitrogen is exhaled?

• 70%

• 79%

• 56%

• 20%

Your Lungs 

Breathing Definition: The process on taking air into and then out of your lungs to facilitate gas exchange.  
Respiration Definition: The release of energy in every cell of your body using Oxygen and Glucose. 

Poll

Are breathing and respiration the same thing?

• Yes

• No

• Sort of

• Not sure

Multiple Choice

The chemical formula for respiration is:

• Oxygen + Carbon Dioxide > Glucose + Water + Energy

• Oxygen + Glucose > Carbon Dioxide + Water + Energy

• Carbon Dioxide + Water > Oxygen + Glucose

The respiratory System 

Trachea - tube leading into Bronchus (cartilage) 
Bronchi- 2 tubes leading to your lungs
Bronchioles - ting tubes leading to your alveoli
Diaphragm - Muscle underneath your lungs 
Intercostal muscles - In-between your ribs 

Gas exchange 

Alveoli - tiny little air sacs on the ends on your bronchioles.  


Adaptations
Have a large surface area to increase gas exchange
Surrounded by capillaries to increase blood supply
One cell think to increase gas exchange rate
layer of moisture to allow gases to dissolve. 

Alveoli 

O2 inhaled into lungs and passed through into the blood stream - alveoli expand
CO2 collected from blood stream and sent back to the lungs to be exhaled - alveoli contract/shrink

Multiple Choice

Which two are adaptations of the alveoli

• large surface area & jelly like sides

• Eyelashes & one cell thick

• Good blood supply & one cell thick

• no carbon dioxide & large surface area

Multiple Choice

Name the tube leading into the bronchi

• oesophagus

• Trachea

• Tractor

• Gullet

Multiple Select

What does the diaphragm do?

• Moves downwards to pull the lungs out

• moves upwards to do nothing

• helps with balance

• nothing

Fill in the Blank

What are the tiny air sacs called?

Multiple Select

which two gases are exchanged in your lungs?

• H2O & CO2

• H2 &O2

• O2 & H2O

• O2 & CO2

Open Ended

Can you explain the difference between breathing and respiration?