4 Alveoli: Tiny air sacs Increase Surface area for gas exchange Rich in capillariesOver 700 million !
5 B. Comparing terms:Breathing: Mechanical intake and exhalation of gases (lungs)Respiration: the exchange of gases by diffusion at the alveoliCellular Respiration: Use of oxygen by the mitochondria to make ATP energy
6 Air enters the Mouth And Nasal Passages where it is warmed & filtered
7 Breathing:Mechanical intake gas Diaphram muscle expands & contracts the chest cavity
8 The brain stem controls breathing by CO2 concentration
9 Alveoli air sacs Respiration or Gas exchange at capillaries By the law of diffusionBlue blood low in oxygen coming into the alveoliRed blood high in oxygen leaves the alveoli
10 Cellular Respiration Breakdown of Food in Mitochondria Plants & AnimalsProduces ATPCell energyCO2 gas waste