Give a long answer to the question given below:
 
Given below are certain situations. Analyze and describe its possible impact on a person:

d. Egg is not fertilised in a human female.
e. Placenta does not attach to the uterus optimally.
Answer variants:
myocardium
endometrium
placental abruption
menstruation
reproduction
preterm delivery
ureter
ovulation
 
d. When the egg remains unfertilized, the
breaks down and sheds during
. This results in the menstrual cycle restarting without pregnancy. The hormonal cycle continues as usual, preparing the body for the next
.
 
e. Improper placental attachment can lead to complications like placenta previa or
. This may result in restricted fetal growth, bleeding during pregnancy, or
. It can pose risks to both the mother and baby, requiring close medical monitoring.