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SLCC Physiology Exam 1 Essay Questions with correct Answers
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SLCC Physiology Exam 1 Essay Questions with correct Answers
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SLCC Physiology Exam 1 EssayQuestions with correct Answers
Define iinegative iifeedback ii- iiAnswers ii-A iireaction iithat iioccurs iiin iiresponse iito iisome
iikind iiof iistimulus. iiIf iithe iivariable iidecreased, iithe iisystem iiresponds iito iimake iiit
iiincrease iiback iito iithe iiset iipoint. iiIt iitends iito iibe iiself-correcting.
Define iipositive iifeedback ii- iiAnswers ii-It iidoesn't iibring iiyou iiback iito iithe iiset iipoint. iiIf iia
iiregulated iivariable iiincreases, iithe iisystem iiresponds iito iimake iiit iiincrease iimore iior
iifaster. iiIt iimust iihave iian iiend.
Give iian iiexample iiof iinegative iifeedback ii& iilabel iithe iireceptor, iiintegrating iicenter, iiand
iieffector. ii- iiAnswers ii-A iihome iithermostat ii(heating iisystem). iiThe iithermostat iicontains
iithe iireceptor ii(thermometer) iiand iiintegrating iicontrol iicenter. iiIf iithe iiheating iisystem iiis
iiset iiat ii70 iidegrees, iithe iiheat ii(effector) iiturns iion iiif iithe iitemperature iidrops iibelow ii70
iidegrees. iiAfter iithe iiheater iiheats iithe iihouse iito ii70 iidegrees, iiit iishuts iioff iieffectively
iimaintaining iithe iiideal iitemperature.
Give iian iiexample iiof iipositive iifeedback ii& iilabel iithe iireceptor, iiintegrating iicenter, iiand
iieffector. ii- iiAnswers ii-Child iibirth. iiDuring iilabor, iithe iicervix iibegins iito iistretch iiand
iireceptor iicells iisend iisignals iito iithe iibrain ii(sensors). iiThe iisignals iiare iireceived iiin iithe
iihypothalamus ii(integrating iicenter) iiwhich iithen iireleases iioxytocin. iiOxytocin iimakes
iicontractions iispeed iiup iiand iibecome iimore iiintense ii(effectors). iiThe iiincrease iiin
iicontractions iicause iimore iioxytocin iito iibe iireleased iiand iithe iicycle iigoes iion iiuntil iithe
iibaby iiis iiborn. iiThe iibirth iiends iithe iirelease iiof iioxytocin iiand iiends iithe iipositive
iifeedback iimechanism.
Define iipassive iienergy ii- iiAnswers ii-It iineeds iia iiconcentration iigradient. iiIt iidoes iinot
iirequire iienergy iiinput. iiIt iigoes iifrom iihigher iito iilower iienergy.
Define iiactive iienergy ii- iiAnswers ii-It iiinvolves iia iipump ii(a iiprotein) iithat iimoves
iisomething iiagainst iiit's iigradient. iiIt iirequires iienergy iito iiwork. iiIt iigoes iifrom iilow iito
iihigh iiconcentration.
Simple iidiffusion ii- iiAnswers ii-Type iiof iipassive iitransport, iidoesn't iirequire iienergy.
iiUnassisted iipassage iiof iismall, iihydrophobic, iinonpolar iimolecules iifrom iihigh iito iilow
iiconcentration.
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