PARTI
TotalValue:75%
Instructions:Shadetheletterofthecorrectansweronthecomputerscorableanswersheet provided.
1.Whichreferstothemaintenanceofarelativelyconstantinternalenvironment? (A)equilibrium
(B)homeostasis
(C)negativefeedback
(D)positivefeedback
2.Whichworktogethertorespondtoemergencysituations? (A)parasympatheticnervoussystemandadrenaline
(B)parasympatheticnervoussystemandglutamate
(C)sympatheticnervoussystemandadrenaline
(D)sympatheticnervoussystemandglutamate
3.Whichstructureispartoftheparasympatheticnervoussystem? (A)brain
(B)meninges
(C)sensorynerves
(D)pupil constriction
4.Whichstatementaboutneuronsistrue?
(A)Potassiumionsmoveinsidetheaxonduringdepolarization. (B)Potassiumionsmoveoutsidetheaxonduringdepolarization. (C) Theinsideofthecellisnegativelychargedatrest.
(D)Theoutsideofthecellisnegativelychargedatrest.
5.Fromwhichstructurebelowdoesthecellbodycollectinformation?
(A) A (B) B (C) C (D) D
6.Theabilitytounderstandandanswerquestionsiscontrolledbywhichstructureofthe brain?
(A)cerebellum
(B)cerebrum
(C)hypothalamus
(D)medullaoblongata
7.Thegraphbelowshowsthedistanceanerveimpulsetravelledovertimefortwodifferent neurons(XandY).Whatconclusioncanbestbedrawnfromthegraph?
(A)XisinfluencedbyananaestheticandYisinfluencedbycaffeine. (B)XismyelinatedandYisunmyelinated.
(C)YisinfluencedbyananaestheticandXisinfluencedbycaffeine. (D)YismyelinatedandXisunmyelinated.
8.Whichconditioniscausedbythebuildupoffluidbetweenthelensandcornea? (A)astigmatism
(B) glaucoma (C) hyperopia (D) myopia
9.Whatistheorderofstructuresthroughwhichsoundwavestravelintothehumanear? (A)auditorycanal-+eardrum-+ossicles
(B)auditorycanal-+ossicles-+eardrum
(C)eardrum-+auditorycanal-+ossicles
(D)eardrum-+ossicles-+auditorycanal
10.Inwhichstructureofthehumaneardoesanimbalanceresultin motionsickness? (A)auditorycanal
(B)eustachiantube
(C)semicircularcanals(D)tympanicmembrane
11.WhichglandreleasesACTH?
(A)adrenal (B)pineal (C)pituitary (D)thyroid
12.Howdoesinsulinaffectbloodinanormalhumanbody? (A)decreasescalciumlevels
(B)decreasesglucoselevels
(C)increasescalciumlevels
(D)increasesglucoselevels
13.Whichbestdescribestheactionofadrugthatstimulatesweightloss? (A)decreasestheactivityofthethymusgland
(B) decreasestheactivityofthethyroidgland (C) increasestheactivityofthethymusgland (D) increasestheactivityofthethyroidgland
14. a) Achildshowsabnormalgrowthofbonetissuecausingextralonglegsandarms. Whatistheprobablecauseofthisconditionandgivetwowaysitcanbetreated?
Increased secretion of GnRH to stimulate the release of hGh from the anterior
Pituitary gland. This would allow the increase of growth factors from the liver.
(b)Inwhatthreewaysdoestheresponseofanervedifferfromtheresponseofa hormone?
Hormones travel via the bloodstream, nerves do not.
Hormones affect the permeability of cells, nerves do not.
Nerves are activated by an “all-or-none” response.