Glucagon
source sentence: "The pancreas responds by secreting another substance called glucagon, which signals the liver to release some of the extra sugar stored there."
context clues: Very next sentence calls it a "hormone", that "raises the sugar level back up to normal level."
defenition: a hormone secreted by the pancreas that acts in opposition to insulin in the regulation of blood glucose levels.
http://dictionary.reference.com/search?q=glucagon
original sentence: I never knew what a pancreas can do, apperantly it secretes glucagon, a hormone that raises my sugar levels.
Harried
source sentence: "The workers stand loosely grouped and at ease, but my uncle looks as harried and tense as a police officer trying to unsnarl a New York City traffic jam."
context clues: sounds like hurried, harry means to annoy i think.
defenition: to harass, annoy, or prove a nuisance to by or as if by repeated attacks; worry
http://dictionary.reference.com/browse/harried
original sentence: My friend sat at the table looking so harried that I had arrived so late to his birthday party.
Incredulity
source sentence: "Their incredulity pesists even now that I am a senior resident, working in one the world's busiest hospital emergency rooms"
context clues: synonym-disbelief/antonym-approval
definition: inability or unwillingness to believe.
http://dictionary.reference.com/browse/incredulity
original sentence: The constant lies about his age only furthered the incredulity of his friends.
