2023 BIOD151 Anatomy and Physiology Test Bank Module 6 With Answers (24 Solved Questions)

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MODULE6Answerthefollowingquestions.•ExplaintworeasonswhyawomanwithlowlevelsofLHwouldnotbeabletobecomepregnant.(1) LH acts on the ovary to cause ovulation to occur. (2) LH causes progesterone release tofacilitatepotentialfertilizationoftheeggandpregnancy.Progesteroneisakeyhormonefor the maintenance of pregnancy.•Wouldyouexpectamaletohaveestrogenintheirbloodstream?Explainwhyorwhynot.•Yes.Bothmaleandfemalebodiesproduce“all”thesexhormones.However,theratios are different.•Theadrenalglandsarelargelyresponsibleforproducingthis“opposite”hormonethat the testis would not.1.ExplaintworeasonswhyawomanwithlowlevelsofLHwouldnotbeabletobecomepregnant.LH, luteinizing hormone, stimulates the ovaries in females. Low levels of LH can indicate aproblemwiththeovaries.Thiscanresultinproblemswithovulation.LowlevelsofLHcanalsoindicate a problem with the pituitary gland, which is the master gland that produces LH.

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1.Explaintheconceptofpositivefeedback.Giveanexampleofahormonethatworksthroughpositive feedback.•Positivefeedbackistheactionofahormoneincreasingtheproductionofthathormone.(This is the opposite of negative feedback).•One example is the action of oxytocin causing the uterus to contract during labor. Oxytocinenhancestheeffectoftheuteruscontractions,causingmoreoxytocintobereleased.Thepositive feedback loop is stopped once the baby is born and the uterus no longer needs tocontract, stopping the production of oxytocin.Positive feedback system increases the amount of the hormone that is regulated. An example of ahormonethatworksthroughpositivefeedbackisoxytocin.Thishormoneisinvolvedwithchildbirthby causing the uterus to contract. As the uterus is contracting, this causes more oxytocin to bereleased. Thefeedbackisstoppedoncethebabyisbornandtheuterusdoesnotneedtocontract.Thisstopsthe release of oxytocin.•Listthehormonebestdescribeseachofthefourstatementsbelow:•Ilowerthelevelofcalciuminthebloodbydepositing calciumintobone.Calcitonin•Iamthesecreted bythepituitaryandstimulatethegonads.FSHorLH(Gonadotropichormones)•Iamsecretedbythepituitarytostimulatetheadrenalcortex.ACTH

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