A 55-year-old male has swelling of the feet. Which of the following aided in the development of swelling?
a. Increased ATP
b. Chloride movement out of the cell
c. Na+ movement into the cell
d. Decreased oncotic pressure
ANS: C
When sodium and water enter the cell freely, cellular swelling, as well as early dilation of the endoplasmic reticulum, results. Decreased ATP would lead to swelling. Chloride movement out of the cell would affect muscle contraction but does not lead to swelling. Increased oncotic pressure would not affect swelling.
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