Why the patient is made to drink a lot of water before the actual medical procedure

Patients are encouraged to drink clear liquids (for example, water) until 2 hours before the time they are scheduled to arrive to the hospital or surgery center. remember, staying hydrated is important. However, certain procedures may require specific instructions.

I hope this answers your question.

i think its through the fallopian tube

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.