The reproductive phase in female has changes that are dictated by regular changes in
The reproductive cycles in the females of most species are regulated by regular hormonal changes or cycles. Once the animals attain reproductive maturity, the reproductive phase in the females has some changes which are dictated by the regular changes in the hormones and cycles.
The female individuals of most of the animal species in their reproductive phase undergo physical and physiological changes which are regulated by hormonal changes in their body. Once the animal enters into its reproductive phase, its body undergoes certain changes physically as well as physiologically which are regulated by hormones. These changes can be recurring in nature, hence can also be referred to as cycles, or more precisely- reproductive cycles (since these cycles occur in the reproductive phase).
Anatomy or basic structural design does not change essentially except for some minor proliferation or sloughing off of some reproduction associated tissues.
All the somatic cells have no role in determining and controlling these reproductive cycles. Although only very limited and certain specialised cells/tissues that secrete hormones play a role in these cycles. No essential cyclical changes in the structure of these hormone-secreting cells/ tissues occur.