Melatonin. It's released from the pineal gland which increases during darkness
luteinizing hormone
Estrogen.
Yes. Hormones are what regulates the menstrual cycle.
Melatonin
testosterone
i believe its Luteninizing hormone :) hope that helps
negative feedback cycle
Progesterone
progesterone
Melatonin
oestrogen and progesterone
Estrogen and progesterone.as wel as follicle-stimulating hormone called FSH and luteinizing hormone or LH, made by the pituitary gland.