Psych 210 Prof Juraska Exam 3 Spring 2011 FORM A Instructions For each question choose the best possible answer among the choices given There is only one best possible answer for each question 1 During which stage does a cell get specified to be a neuron A proliferation C migration B myelination D differentiation 2 During human adolescence the volume of gray matter of the cerebral cortex and the white matter A decreases increases C increases increases B increases decreases D decreases decreases 3 The number of neurons in the adult rat AVPV is A greater in females C the same in both sexes B greater in males D greater in females if they are given T in adulthood 4 The liver A secretes insulin B stores glycogen C secretes glucagon D secretes leptin 5 If an axon has collateral branches that remain intact after damage it will A not undergo anterograde degeneration C regrow any cut branches B not undergo retrograde degeneration D both A and B 6 The ovaries are removed from an XX rat at birth As an adult this rat will A mount intromit and ejaculate if given T B mount but with no ejaculation if given T C do the lordosis posture if given E and P D not be able to do any sexual behavior regardless of hormone injections 7 Lordosis is a posture that occurs A in both male and female rats when their hormones are high B in female rats when E and P are high C in female rats at any time during their cycle D none of the above 8 During development the growth of the clitoris requires A estrogen C FSH B Mullerian inhibiting hormone D none of the above 9 What is the signal for hunger in the blood in the post absorptive phase A decreasing insulin C increasing insulin B increasing glycogen D decreasing glucose 10 Melatonin is secreted by the A SCN C pineal gland B adrenal gland D pituitary gland 11 An adult XY person with androgen insensitivity has A testes and Wolffian ducts C ovaries and Mullerian ducts B Mullerian ducts with no gonads D testes and neither duct system 12 When the lateral hypothalamus is lesioned axons are cut that pass through the nucleus and carry several neurotransmitters What inevitably happens to these cut axons A retrograde degeneration B more myelination C anterograde degeneration and regrowth of the cut ends D anterograde degeneration but no regrowth of the cut ends 13 When does T secretion peak during human development A first trimester C third trimester B second trimester D at birth 14 High adenosine makes you A sleepy C hungry B alert D not hungry 15 Oligodendroglia are part of which stage of neuronal development A proliferation C migration B myelination D differentiation 16 If an XX rat is given T at birth as an adult it will have compared to an XX rat with no T added A more neurons in all of the nuclei in the mPOA B fewer neurons in the INAH 3 C more neurons in the SDN D a larger SCN 17 Which of the following brain areas is NOT known to be involved in sleep and wakefulness A reticular formation C hypothalamus B locus coeruleus D cerebellum 18 The arcuate nucleus monitors the amount of A glucose in the blood C insulin in the blood B adenosine in the brain D leptin in the blood 19 An adult XY person with androgen insensitivity has A female external genitalia C external genitalia that are in between male and female B male external genitalia 20 Lesions of what brain area result in a rat that will sink in room temperature water but swim in ice water A SCN C SDN B lateral hypothalamus D arcuate nucleus 21 Neurotrophic factors A increase AMPA receptors B stop apoptosis C inhibit Mullerian duct development D increase NMDA receptors 22 An XXY person will have A male external genitalia B female external genitalia C external genitalia that are in between male and female D none of the above this genotype cannot survive 23 Rats are born in such an immature state that they A can only nurse after a few days of growth B cannot urinate unless licked by the mother 24 Adults cannot A increase the number of glia B grow dendrites C do not yet have gonads C grow long axons D add and subtract synapses 25 AMPA receptors A are only present during development B create a synaptic potential if glutamate binds to them C decrease if NMDA receptors open D open only if NMDA receptors are used 26 The indifferent gonad is found in A males only C the first trimester of human development B females only D rats that have had their testes removed at birth 27 Are there sex differences in math ability A yes males have higher ability on average B yes females are more variable in their ability C yes males are more variable in their ability D no there are no differences in the average or variability 28 Circannual rhythms are controlled by the A length of the day C temperature B endogenous cues D pituitary gland 29 Which of the following does NOT predispose males to have a homosexual orientation A a large number of older brothers B a family with a high incidence of homosexuals on the paternal side C a family with a high incidence of homosexuals on the maternal side D having an identical twin that is homosexual 30 When do male rats secrete T during development A entirely before birth prenatally C both before and after birth B entirely after birth postnatally 31 Epigenetic influences on behavior can occur because A a gene has been turned off and this will be passed to the next generation B there is a mutation in the structure of a gene C T was secreted during development D of circadian rhythms 32 Lesions of the mPOA in rats A irreversibly stops sexual behavior in both males and females B decreases T in males and E and P in females C interferes with male sexual motivation D stops rats of both sexes from eating 33 Ovulation is directly caused by A luteinizing hormone B follicle stimulating hormone C progesterone D falling levels of estrogen 34 Sugar drinks increase the secretion of which A adenosine increases leptin C insulin increases hunger B glucagon decreases hunger D melatonin increases sleep 35 Males who identified themselves as homosexual had in their INAH3 compared to males presumed to be heterosexual A fewer neurons C the same number of neurons B more neurons 36 Which of the following hormone s cause production of sperm in the testes of adult males A testosterone C luteinizing hormone B follicle stimulating hormone D both A and B 37 Proliferation of new neurons is NOT found in which of the following areas in a one year old human child A cerebellum C olfactory bulb B hippocampus D cerebral cortex 38 An XY human