how does menstrual flow occurs after tubectomy i mean the passage blocked then how does the - Biology - Human Reproduction

Question

how does menstrual flow occurs after tubectomy? i mean the
passage blocked then how does the degnerated egg comes out from
????

Priyanka Sharma · Accepted Answer

Tubectomy prevents the passage of ovum through the fallopian
tube Menstruation is the release of endometrial tissue along with
the unfertilised ova in the absence of fertilisation
Every month uterus prepares itself for receiving fertilised egg
(zygote) and to help its development into baby If fertilised egg is
not received then prepared lining of uterus comes out of the body
as menstrual flow Even after tubectomy this process can continue In
case of tubectomy, menstruation will occur but ova will not be
released

how does menstrual flow occurs after tubectomy?... i mean the passage blocked then how does the degnerated egg comes out from...????