A 38-year-old man with a history of "heartburn" suddenly experiences excruciating pain in the epigastric region of his abdomen. Surgery is performed immediately, and evidence of a perforated ulcer in the posterior wall of the stomach is noted. Stomach contents that have seeped out will most likely be found in which of the following structures?
A. Between the parietal peritoneum and the posterior body wall
B. Greater peritoneal sac
C. Ischioanal fossa
D. Lesser peritoneal sac
E. Paracolic gutter
Ans: D. Lesser peritoneal sac
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The ____________________ provides information essential for the sense of equilibrium and for coordinating head movements with eye and postural movements
Fill in the blank(s) with correct word
A cell junction that allows movement of molecules between the cytoplasm of adjacent of cells is a:
a. desmosome b. tight junction c. intermediate junction d. gap junction
Which of the following is not descriptive of REM sleep?
A. It is the period when dreaming occurs. B. It normally occurs only once per night, usually just before waking up. C. Postural muscles are virtually paralyzed during REM sleep. D. EEG waves that resemble the awake state can be recorded during REM sleep. E. Eyes move rapidly back and forth beneath closed lids.
Describe the mechanics of ventilation
What will be an ideal response?