Transcript Respiratory system 1

Respiratory system 1
5.11.2007
Objectives for today……
• What respiration is?
• Why oxygen is important?
• What makes up the respiration
system?
• What muscles help in breathing?
• What is Gaseous exchange?
What is Respiration?
• Respiration is the circulation on gases
around the body.
• The supply of gases is delivered
through the process of
breathing.(Respiration)
The Respiratory System
Inspiration
Expiration
Breathing Action
In Summary
BRONCHIOLES AND
ALVEOLI
Gaseous Exchange
Gaseous Exchange
• In the lungs, carbon dioxide (CO2)
from the blood passes into the alveoli
through the respiratory membrane, a
thin barrier that has several layers.
• Oxygen (O2) crosses the membrane
in the opposite direction, from the
alveoli to the blood capillaries.
• The fitter we become the more
efficient this transfer becomes.
Objectives for today……
• What respiration is?
• Why oxygen is important?
• What makes up the respiration
system?
• What muscles help in breathing?
• What is Gaseous exchange?
NEXT LESSON……
• Gaseous exchange continued…
LUNG CAPACITY
• Tidal volume and Residual
volume
• Vital capacity
• Total lung capacity
• Respiration and physical
exercise
HOMEWORK
• Homework Sheets 1 & 2.
• Due: