Multiple Choice
When you exhale, __________.
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40. Circulatory System
Gas Exchange
Back40. Circulatory System
Gas Exchange
- Multiple ChoiceIn the alveoli and lung capillaries, carbon dioxide and oxygen are exchanged by means of __________.1081views
- Multiple ChoiceWhich structure in a human is most similar in function to the gill lamellae of a fish?1109views
- Multiple ChoiceWhat happens when the CO2 level from cellular respiration increases in the blood?2154views
- Multiple ChoiceWhat is the major reason that land-dwelling mammals evolved lungs rather than gills as a primary respiratory organ?2721views
- Multiple ChoiceWhat is the correct order of structures through which air passes as it is inhaled by a typical mammal?4039views
- Multiple ChoiceWhich of the following components of the mammalian gas exchange system has a surface covered by a thin film of fluid without cilia?1144views
- Multiple ChoiceCountercurrent flow in the gills of a fish __________.1292views
- Multiple ChoiceWhich respiratory organ is most often found only in fully aquatic animals?819views
- Multiple ChoiceGas exchange in the gills of a bony fish is maximized by which of the following?1114views
- Multiple ChoiceFor a body surface to be a respiratory surface, it must __________.990views
- Textbook Question
Complete the following concept map to review some of the concepts of gas exchange.
1322views - Textbook Question
When you hold your breath, which of the following first leads to the urge to breathe?
a. Falling CO2
b. Falling O2
c. Falling pH of the blood
d. Rising pH of the blood
971views - Textbook Question
Which of the following promotes oxygen release from hemoglobin?
a. A decrease in temperature
b. An increase in O₂ level.
c. A decrease in pH
d. A decrease in carbonic anhydrase activity
1406views - Textbook Question
When you hold your breath, which of the following blood gas changes first leads to the urge to breathe?
a. Rising O2
b. Falling O2
c. Rising CO2
d. Falling CO2
1251views