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BIOL 2402 Test 4 Review (LATEST UPDATE) REAL QUESTIONS AND VERIFIED ANSWERS |100% CORRECT | ALREADY GRADED A

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BIOL 2402 Test 4 Review (LATEST UPDATE) REAL QUESTIONS AND VERIFIED ANSWERS |100% CORRECT | ALREADY GRADED A

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BIOL 2402 Test 4 Review (LATEST UPDATE) REAL
QUESTIONS AND VERIFIED ANSWERS |100% CORRECT |
ALREADY GRADED A
What is the relationship between a partial pressure gradient and
respiratory gas exchange? Ans✓✓✓partial pressure gradient drives
respiratory gas exchange. Gases more from high to low pressure, each
has own gradient


Inspiration Ans✓✓✓Breath in


Expiration Ans✓✓✓Breath out


Bronchoconstriction Ans✓✓✓airflow decreased by smooth muscle
narrowing lumen


Pneumothorax Ans✓✓✓fully collapsed lung


Internal respiration Ans✓✓✓CO2- tissue to blood
O2- blood to tissue


External respiration Ans✓✓✓CO2- blood to alveoli
O2- alveoli to blood

, Know the types of Alveolar cells and function Ans✓✓✓Type 1- Gas
exchange
Type 2- Surfactant


Know the values for partial pressure of oxygen and carbon dioxide used
in the notes when gas exchange is happening. Ans✓✓✓O2 Alveoli- 100
O2 Blood- 40
CO2 Alveoli- 40
CO2 Blood - 46


What factors affect gas exchange? Ans✓✓✓Partial pressure
distance of alveoli from blood
solubility of gas
surface area of alveoli


What is a dissociation curve
Shift to the right
Shift to the left Ans✓✓✓Pressure and Hemoglobin Saturation
Shift to the right - less sticky for O2, exercising, temperature increases,
pH decreases, CO2 increases
Shift to the left - more sticky for O2, cold, temperature decreases, pH
increases, CO2 decreases

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