Respiration and Breathing

• Respiration is the process used in all living things for gaining energy.
• Energy is needed for keeping the vital organs working and generally staying alive.
• It is also needed for moving muscles. Keeping a constant body temperature is important to.
• Cell division, reproduction and other important processes in the body all need energy to work.

Breathing in >>> Inspiration

• Diaphragm lowers and the ribs raise to increase the volume of the thorax.
• The pressure decreases so air is drawn into the lungs.

Breathing out >>> Expiration

• Diaphragm raises and ribs lower which decreases the volume of the thorax.
• The pressure increases and air is forced out of the lungs