29. What is nidation? In which
phase of the menstrual cycle
does nidation occur?

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Nidation is the implantantion the
embryo in the . Nidation occurs
around the day after fecundation,
i.e., to 8 days after
(obviously, it occurs only fecundation
also occurs). Since occurs in the luteal
the progesterone level ishigh
the endometrium is in best condition
to receive embryo.