Write the name and the source of hormones regulating the following :
(a) Uterine changes in pregnancy.
(b) Urinary elimination of water.
(c) Metamorphosis of tadpoles.
(d) Plasma Ca+2 level.
(e) Na+ and K+ metabolism.
(f) Blood sugar level.
(g) Uterine contractions at the time of child's birth.