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RESPIRATORY SYSTEM PART IV NOVEMBER 3

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RESPIRATORY SYSTEMPART IVNOVEMBER 3

AGENDA

● QUIZ● QUESTIONS● VIDEO● NOTES

QUIZ

QUESTIONS

FOCUSED BREATHING

NOTES

Transport and Diffusion of Gases

Air we breathe = mixture of gases

● Oxygen = 20.9%● Carbon dioxide = 0.0391%

PARTIAL PRESSURE

PARTIAL PRESSURE

OXYGEN TRANSPORT AND DIFFUSION

Transported through the blood in 2 different ways

1. 1.5% - dissolved in the plasma2. 98.5% - attached to Hb to form oxyhemoglobin

OXYGEN TRANSPORT AND DIFFUSION

Hemoglobin

ERYTHROCYTES

Hemoglobin HemeRBC

● 4 irons/Hb → 250 million Hb/RBC → 1 billion O2/RBC● 98.5% O2 devliered via Hb

CARBON TRANSPORT AND DIFFUSION

Transported through the blood in 3 different ways

1. 7% - dissolved in the plasma2. 20% - attached to Hb to form carbaminohemoglobin3. 73% - reacts with water in the plasma → carbonic acid

CARBON TRANSPORT AND DIFFUSION