Hormones

secreted by: hypothalamus acts upon: anterior pituitary stimulated release FSH provide the positive drive for secretion of both LH and FSH by the anterior pituitary

secreted by: anterior pituitary acts upon: ovary stimulated testosterone production in males *maturation of follicle and spermatozoa * induces ovulation and development for the CL

secreted by: anterior pituitary acts upon: ovary * needed in small amounts *induces follicular development * induces estrogen production * stimulates spermatogenesis

secreted by: follicle acts upon: anterior pituitary * causes a reduction in FSH production by anterior pituitary

secreted by: follicle * responsible for estrus * influence mobility and secretory function in reproductive tract (uterine milk) * responsible for early stage development of the mammary gland

secreted by: corpus lutem * “hormone of pregnancy” * maintenance of pregnancy * final maturation of mammary gland * reduced excitability of smooth muscle fibers * negative feedback to the hypothalamus

secreted by: posterior pituitary, corpus lutem acts upon: smooth muscle *causes contractions of smooth muscle fibers involved in milk “let down”, uterine contractions during parturition, contractions of smooth muscle in uterus and oviducts during mating

secreted by: uterine lining acts upon: corpus lutem * produced by endometrium of non pregnant uterus * causes the regression of the CL * causes uterine contraction * gives pregnant or open signal

produced by: fertilized ovum received by: uterus blocks leuteolysis *pregnancy recognition signal in cattle and sheep