Female reproductive physiology 0.0 / 5 ? BiologyVeterinary medicineUniversityNone Created by: ezCreated on: 03-05-14 13:01 Where are the GnRH nuclei found? Preoptic Area 1 of 34 What kind of GnRH release is seen in males? Tonic only 2 of 34 What effect do GABAnergic neurones have on GnRH neurones? Inhibits them 3 of 34 What effect does Beta Endorphin have? Inhibits LH 4 of 34 What effect does Noradrenaline have on GnRH neurones? Stimulates them 5 of 34 What effect does dopamine have on GnRH neurones? Inhibits them 6 of 34 What effect does progesterone have on GnRH release? Inhibits it 7 of 34 What does FSH do? Stimulates follicular growth in ovaries 8 of 34 What does LH do? Triggers ovulation and corpus luteum development 9 of 34 Which oestradiol receptors do GnRh neurones express? ER beta 10 of 34 What form of feedback on GnRH release is mediated by Kisspeptin neurones? Positive and negative feedback 11 of 34 What is added in glycosylation of the Beta subunits of gonadotrophins? Carbohydrates and sialic acid 12 of 34 What type of receptor is the GnRH receptor? G-coupled protein receptor 13 of 34 What happens to FSH levels after ovulation? They fall 14 of 34 What does inhibin do? Inhibits FSH 15 of 34 What does activin do? Promotes FSH 16 of 34 What does follistatin do? Binds to and inhibits activin 17 of 34 What do low-frequency GnRH pulses do? Stimulate release of FSH 18 of 34 What is the dominant hormone in the follicular phase? Oestrogen 19 of 34 What produces oestradiol in the follicular phase? The dominant follicle 20 of 34 What state are gametes arrested in at birth of the female animal? Primary oocyte 21 of 34 What is produced at first oestrus (i.e. puberty onset)? Secondary oocyte and polar body 22 of 34 Are primary oocytes... Diploid? 23 of 34 Are secondary oocytes... Haploid? 24 of 34 What type of epithelium do the granulosa cells of a primary follicle form? Stratified cuboidal 25 of 34 What is required before a tertiary follicle can develop? LH surge 26 of 34 At what point does oestradiol synthesis by the follicle begin? Secondary follicle 27 of 34 Which follicular cells does FSH stimulate? Granulosa cells 28 of 34 What does a regressed corpus luteum form? Corpus albicans 29 of 34 What induces luteolysis? Uterine hormones 30 of 34 What stimulates the production of prostaglandin F2a? Oxytocin from corpus luteum 31 of 34 What triggers puberty? Decrease in the sensitivity of the hypothalamus to oestradiol 32 of 34 What accompanies the gonadostat theory? Change in tone of neurones acting on GnRH neurones 33 of 34 What is FSH highly sensitive to? Negative feedback of oestradiol 34 of 34
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