Question

how does contaceptive pills avoid fertilization when its content, i.e., oestrogen n progesteron, develop n maintain the endometrium lining during normal conditions ??

Answer 1

Oral contraceptive pills work in these ways:
1. Inhibition of ovulation
2. Inhibition of motility and secretory activity of Fallopian tubes
3. Alteration in uterine endometrium to make it unsuitable for implantation
4. Changes in cervical mucus impairing its activity to allow passage and transport of sperms.