100285558-Respiration form 3 Science KSSM.ppt

100285558-Respiration.ppt

1. RESPIRATION
DISEDIAKAN OLEH:
KAMARUZAMAN BIN ABD SAMAD

2. What is respiration?
Physiology
Transport of oxygen from outside air to the cell within tissues
and transport of carbon dioxide in opposite direction.
Biochemical
Metabolic process which is an organism obtains energy by
reacting oxygen with glucose to give water,
carbon dioxide and energy.

3. Structure Of Human
Respiratory System
Nasal cavity
Space for air pass
Rib
Protect lung
Lung
Contain alveoli
Intercostal muscle
Expand or contract the
thoracic cavity
Trachea
Tube for air enter lungs
Bronchi
Branches of trachea
Diaphragm
Control the volume of
thoracic cavity

4. Structure Of Bronchiole
and Alveolus
Bronchiole
Capillary vein
Capillary artery
Alveolus

5. Characteristic Alveolus For Efficient
Gas Exchange
Thin
Moist
Many
Surround blood capillary

6. Mechanism Of Breathing
Inhalation
•Decrease
•Air move in
•Increase
•Contract / flat
•Raised
•Contract
Exhalation
•Increase
•Air move out
•Decrease
•Relax / curves
•Lowered
•Relax
Air movement
Volume in lung
Air pressure in lung
Diaphragm
External intercostal muscle
Rib and sternum

7. Transport Of Oxygen In Human Body
Blood low in O
2,
High in CO
2
CO
2diffuses from
blood to be exhaled
Red blood cell
Blood low in CO
2
High in O
2
Alveolus wall
Capillary wall
O
2 diffuses into blood
O
2 is diffuses to the red
blood cell
Gases dissolve in moist
mucus lining
Air move in and out
of alveolus

8. Air with high concentration of oxygen enter alveoli and diffuse
into the blood in capillary.
Oxygen + Haemoglobin Oxyhaemoglobin
Oxyhaemoglobin (high O
2) release oxygen and diffuse
into body cell .
Oxyhaemoglobin Oxygen + Haemoglobin
Cell has high concentration of carbon dioxide diffuse from the
body cell into blood
Carbon Dioxide + Haemoglobin Carbaminohaemoglobin
Deoxygenated blood (highCO
2) release the carbon dioxide and
diffuses into alveoli.
CarbaminohaemoglobinCarbon Dioxide + Haemoglobin
1
2
3
4

9. HARMFUL
SUBSTANCES DUE TO
AIR POLLUTION
Sulphur dioxide
•From combustion fossil fuel
•Czirritation respiratory track
Haze
•Czirritation
respiratory track Carbon monoxide
•From incomplete burning
•Czsuffocation
Nicotine
Czhardening of blood vessels
Tar
•Damages internal
wall of lung

10. Emphysema
Lung cancer
Bronchitis
Asthma

11. Way to Improve Air Quality