PPT Slide
a female is reproductively inactive until exposed to a male
a male pheromone stimulates GnRH release (neuroendocrine reflex)
- GnRH release stimulates FSH and LH release, follicular development and secretion of estrogen
increasing levels of estrogen stimulate behavioral estrus
vaginocervical stimulation (via intromissions from male) stimulates further GnRH release
- GnRH release will lead to LH surge and ovulation
after ovulation, progesterone will maintain pregnancy if necessary
GnRH: gonadotrophin releasing hormone
FSH: follicle stimulating hormone
GnRH Neuroendocrine Reflex--twice
Induced Estrus &Ovulation