Chapter 46 Flashcards
What is parthenogenesis?
parthenogenesis is the development of a new individual from an unfertilized egg
What is hermaphroditism?
individual has both male and female reproductive systems, they can self fertilize or mate
What triggers ovulation?
leutinizing hormone surge
where does sperm form?
in the seminiferous tubules
where do eggs form?
the ovaries
what are estrous cycles?
estrous cycles are characteristic of most mammals; endometrium is reabsorbed by uterus, heat period, varies from species to species
what are menstrual cycles?
menstrual are only in humans and some primates, endometrium is shed in menstruation and sexual receptivity is always
what is oogenesis?
the development of a mature egg, immature eggs form in female embryo
what do FSH and LH stimulate?
FSH and LH stimulate follicle to grow in follicular phase
what is important in the first 14 days?
FSH and estradiol
when is progesterone important?
in the second 14 days, secreted by corpus luteum, thicken the endometrium
What causes LH surge?
elevated estradiol level peaks
order of phases
follicular, ovulation, luteal
in males what does FSH and LH do?
FSH creates sertoli cells, LH regulates Leydig cells which secrete testosterone and promote spermatogenesis
What is testosterone involved in and give an example?
In secondary male characteristics, like having a beard
