Gaseous Exchange
- Created by: Uswa
- Created on: 23-03-13 15:14
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- Gaseous Exchange
- Lungs
- In the THORAX (the upper part of the body)
- Separated from ABDOMEN (lower part of body) by DIAPHRAGM
- To make air move INTO lungs
- Ribcage CONTRACTS and moves out & up
- Diaphragm becomes FLATTER
- Volume of thorax INCREASES
- Pressure decreases
- To make air move OUT of lungs
- Ribcage RELAXES and moves in & down
- Diaphragm RELAXES and becomes dome-shaped
- Volume of thorax DECREASES
- Pressure increases
- Adaptations
- Surface area of lungs and small intestines is increased by VILLI
- Villi provide a large SURFACE AREA with an extensive netword of CAPILLARIES
- To absorb the products of digestion by diffusion and acitve transport
- Lungs
- Breathing system takes air into and out of the body
- Gaseous Exchange
- Lungs
- In the THORAX (the upper part of the body)
- Separated from ABDOMEN (lower part of body) by DIAPHRAGM
- To make air move INTO lungs
- Ribcage CONTRACTS and moves out & up
- Diaphragm becomes FLATTER
- Volume of thorax INCREASES
- Pressure decreases
- To make air move OUT of lungs
- Ribcage RELAXES and moves in & down
- Diaphragm RELAXES and becomes dome-shaped
- Volume of thorax DECREASES
- Pressure increases
- Adaptations
- Surface area of lungs and small intestines is increased by VILLI
- Villi provide a large SURFACE AREA with an extensive netword of CAPILLARIES
- To absorb the products of digestion by diffusion and acitve transport
- Lungs
- Gaseous Exchange
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