What would be the most direct result of an individual having an inability to produce surfactant in their alveoli?
A. The alveoli would physically collapse.
B. The alveoli would be much more likely to harbor infections.
C. The alveoli would fill with fluid due to an ion transport defect.
D. Oxygen exchange with the blood would be impaired due to a thickening of the epithelium.
E. Carbon dioxide exchange with the blood would be impaired due to an inhibition of carbonic anhydrase.
A. The alveoli would physically collapse.
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Identify the following structures on this aboral view of the tip of a sea star arm.
What will be an ideal response?
The best control for rats is
a. a very effective rodenticide. b. removal of garbage which causes them to eat each other. c. cats introduced into the food storage buildings. d. new sonic disturbance boxes. e. none of these.
The spaces that separate adjacent Schwann cells are
a. neuroglia. b. myelin sheaths. c. nodes. d. dendrites. e. synapses.
Which hormone triggers satiety?
A. leptin B. prostaglandins C. erythropoietin D. epinephrine E. follicle-stimulating hormone