Time To Read
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OVERVIEW
PART 1
PART 2
PART 3
PART 4
PART 5
PART 6
PART 7
Quiz
The Story
On later visits, Stina gets imaged. To read a scan you have to know how the body is sliced (the planes) and what compartments the slice passes through (the cavities). And inside those cavities is something easy to overlook until it goes wrong: thin, wet serous membranesThin tissues that line body cavities and secrete fluid. lining closed spaces and wrapping the organs. Those membranes create a tiny “potential space” – normally just a film of lubricant. Remember that space. It is exactly where Stina’s attacks happen.

Compare Stina’s uninfected appendixA small, finger-like pouch attached to the cecum, thought to play a role in immune function. to an infected appendix.
Activity:
Activity:
Three different serous membranes, one repeating design. Next we sort all four membrane types – and meet the one behind Stina’s “appendicitis.”
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Four Membranes, One Troublemaker
List of terms
- serous membranes
- appendix