University of Waterloo

Determine the equations of two lines that pass through the point (-1, 2) and are tangent to the graph of y = x ^ 2 + 5

20. What causes the massive release of gonadotropins during the follicular phase? The low levels of progesterone The high levels of estrogen The LH surge The FSH surge 21. What happens to the somatic cells of the ovulatory follicle after the LH surge? They continue to grow and secrete estrogen They become part of the endometrial lining They undergo meiosis I They transform into luteal cells 22. What causes the endometrial lining to be shed during the follicular phase? The low levels of progesterone The high levels of estrogen The LH surge The completion of meiosis I in the oocyte 23. What does the uterus prepare for under the influence of progesterone and estrogen during the luteal phase? The follicular phase Menses Pregnancy Ovulation

17. Which hormone is not a product of the ovaries? FSH Progesterone Estradiol Testosterone 18. What triggers the luteal regression that marks the beginning of the follicular phase? The absence of pregnancy The completion of meiosis I in the oocyte The transformation of somatic cells into luteal cells The LH surge 19. Which hormone surge causes the selected follicle to grow and secrete estrogen during the follicular phase? Progesterone surge FSH surge LH surge Estrogen surge

13. Which gonadal steroid does not typically mediate negative feedback at the hypothalamus and anterior pituitary? Estradiol DHT Testosterone Progesterone 14. What is the main hormone product of the testes? Testosterone FSH LH DHT 15. Which hormone product of the ovaries is responsible for triggering a 'surge' release of LH/FSH? Testosterone FSH Estradiol Progesterone 16. What type of hormone is progesterone? Androgen Progestin Estrogen Luteinizing

10. Which hormone plays a key role in the initiation of rhythmic uterine contractions during parturition? Progesterone Estrogen Oxytocin Prolactin 11. What is the main factor that controls the process of parturition? 'Ripening' of the amniotic sac 'Ripening' of the placenta 'Ripening' of the umbilical cord 'Ripening' of hormones 12. What is the first differentiated cell type in a mammalian embryo? Endoderm Mesoderm Trophectoderm Germ cells

7. What is the fate of the first two pairs of kidneys during fetal development? They degenerate They differentiate into the adrenal glands They fuse together to form a single pair of kidneys They develop into functional kidneys 8. Which duct is retained in females during sex determination? Paramesonephric duct Paraduct Metanephric duct Mesonephric duct 9. What does the inner cell mass differentiate into in a mammalian embryo? Extra-embryonic membranes Embryo proper Adrenal glands Placenta