Multiple Choice
How does myoglobin aid diving mammals such as the Weddell seal?
40. Circulatory System
Gas Exchange
Back40. Circulatory System
Gas Exchange
- Multiple ChoiceWhich of the following would increase the release of oxygen from red blood cells?
- Multiple ChoiceWhen you hold your breath, which of the following blood gas changes leads initially to the urge to breathe again?
- Multiple ChoiceWhat causes CO2 in the blood to decrease?
- Multiple ChoiceWhen you exhale, __________.
- Multiple ChoiceIn the alveoli and lung capillaries, carbon dioxide and oxygen are exchanged by means of __________.
- Multiple ChoiceWhich structure in a human is most similar in function to the gill lamellae of a fish?
- Multiple ChoiceWhat happens when the CO2 level from cellular respiration increases in the blood?
- Multiple ChoiceWhat is the major reason that land-dwelling mammals evolved lungs rather than gills as a primary respiratory organ?
- Multiple ChoiceWhat is the correct order of structures through which air passes as it is inhaled by a typical mammal?
- Multiple ChoiceWhich of the following components of the mammalian gas exchange system has a surface covered by a thin film of fluid without cilia?
- Multiple ChoiceCountercurrent flow in the gills of a fish __________.
- Multiple ChoiceWhich respiratory organ is most often found only in fully aquatic animals?
- Multiple ChoiceGas exchange in the gills of a bony fish is maximized by which of the following?
- Multiple ChoiceFor a body surface to be a respiratory surface, it must __________.