Ring structures that convey a characteristic smell to many of their compounds are known as:

Compare and contrast hematemesis, hematochezia, and melena. Explain how the color gives the investigator clues as to the location of the bleed. Why would a rapid GI transit time produce hematochezia?

What will be an ideal response?

A patient in early shock informs the EMT that that he has had severe diarrhea and vomiting over the past four days. Given this history, the EMT should recognize the pathophysiology of the shock as:

A) loss of red blood cells. B) decreased formed elements in the blood. C) leakage of the capillaries. D) loss of plasma volume.