The period of development is the time from conception to birth. (watch your spelling! )

The prenatal period

Explanation:

The process of prenatal development occurs in three main stages.

- The first two weeks after conception are known as the germinal stage

- The third through the eighth week is known as the embryonic period, and

- The time from the ninth week until birth is known as the fetal period

after a the power stroke, adp is released, but the cross-bridge formed is still in place. atp then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site.