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It is well known that human tears often serve to moisten the
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19 Jul 2007, 07:34
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It is well known that human tears often serve to
moisten the eye, protect it from infection, and wash
away irritants; such tears are called irritant or reflex
tears. Dr. Field hypothesizes that emotional tears
have a different biological function. She suggests that
by shedding tears when under emotional stress people
excrete harmful chemicals that build up in such body
fluids as blood serum during emotional stress.
Each of the following, if true, provides some support
for Dr. Field’s hypothesis EXCEPT:
(A) The people most likely to cry when undergoing
emotional stress are less likely to suffer from stressrelated
diseases than is the population at large.
(B) If a local anesthetic is applied to the surface of
the eye, irritant and reflex tears are inhibited, but
emotional tears are not.
(C) The chemical composition of tears that are
induced by grit in the eye is identical to the
composition of tears induced by emotional Stress.
(D) The concentration of a substance that the body
produces only under conditions of emotional Stress is
thirty times greater in tears than in blood serum.
(E) Patients who suffer from a condition that pre
secretion of tears display a slower than normal
physiological recovery from emotional stress.
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Re: It is well known that human tears often serve to moisten the
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19 Jul 2007, 09:56
trahul4 wrote:
It is well known that human tears often serve to moisten the eye, protect it from infection, and wash away irritants; such tears are called irritant or reflex tears. Dr. Field hypothesizes that emotional tears have a different biological function. She suggests that by shedding tears when under emotional stress people excrete harmful chemicals that build up in such body fluids as blood serum during emotional stress.
Each of the following, if true, provides some support for Dr. Field’s hypothesis EXCEPT:
(C) The chemical composition of tears that are induced by grit in the eye is identical to the composition of tears induced by emotional Stress.
I think it is C.
If the emotional tears are to excrete harmful chemicals then the emotional tears should have those chemicals. Irritant tears will not have those harmful chemicals.
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
gmatclubot
Re: It is well known that human tears often serve to moisten the [#permalink]