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Home Q & A Board Biology-Related Homework Help Medicine Nursing and Clinical
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Hodahussain Hodahussain
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6 years ago
During life in utero, oxygenation of the fetus occurs through transplacental gas exchange. When birth occurs, four factors combine to stimulate the respiratory center in the medulla.
 
  The initiation of respiration then follows. Which is not one of these essential factors?
  a. Chemical c. Thermal
  b. Mechanical d. Psychologic
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adbuchyadbuchy
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6 years ago
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Hodahussain Author
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6 years ago
this is exactly what I needed
dianeflunder
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