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Iseel Espinoza - Phy

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QuestionAnswer
During gas exchange, why does oxygen move from alveoli into blood? Because the partial pressure of O₂ in alveolar air is higher than in the incoming blood.
What hormone causes the gallbladder to contract and release bile? Cholecystokinin (CCK).
What does bile do during digestion? It emulsifies fats, breaking large fat droplets into smaller ones for easier digestion.
What enzyme in saliva begins carbohydrate digestion? Amylase.
During swallowing, which stage poses a risk of food entering the airway? The oropharyngeal stage (before the epiglottis fully closes).
Which nerve carries stretch-receptor signals from the stomach to the brain during fullness? The vagus nerve.
What is the major form of CO₂ transport in the blood? As bicarbonate ions (HCO₃⁻).
Boyle’s Law states what relationship? Gas volume varies inversely with pressure (at constant temperature).
What is emulsification? The breakdown of large fat droplets into smaller droplets by bile.
What is total lung capacity (TLC)? TLC = VC + RV. It represents the total volume of air the lungs can hold.
What is internal respiration? Internal respiration is the exchange of gases between the blood and the tissue cells throughout the body.
What is external respiration? External respiration is the exchange of gases between the alveoli in the lungs and the blood in the pulmonary capillaries.
Created by: iseel26
 

 



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