10 Questions
According to Fick’s law, the rate of gas transfer across the membrane is directly proportional to which of the following?
Difference in partial pressure of gas on the two sides of the membrane and the membrane’s diffusing capacity
What enables the harvesting of energy from food molecules provided by the digestive system?
Exchange of gases with body cells
What characterizes an efficient gas exchange surface according to the text?
Large surface area and a small distance for gases to diffuse across
Where does gas exchange with the environment occur in animals?
Moist body surfaces
What is the gas exchange as we breathe often called?
Respiration
What is the largest airway that communicates with the external environment in the respiratory system?
Trachea
What are the microscopic air sacs in the lungs called in mammals and reptiles?
Alveoli
What determines the anatomy and physiology of the respiratory system in animals and plants?
Size of the organism, environment, and evolutionary history
What is the term for the system of hollow tubes that connect the air sacs with the external environment?
Airways
In birds, what are the microscopic air sacs in the lungs known as?
Atria
Test your knowledge of gas exchange in the human body with this quiz. Explore the concepts of breathing, gas transport through the circulatory system, and exchange of gases with body cells. See how well you understand Fick's law and its relationship to gas transfer across membranes and tissues.
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