Where do fertilization to form a zygote commonly occur in the female reproductive tract?

Where do fertilization to form a zygote commonly occur in the female reproductive tract?

• A. Distal fallopian tube
• B. Uterine cavity
• C. Ovary
• D. Endometrium

Answer: (A)

Fertilization happens where the egg and sperm meet in the fallopian tube, most often in the distal portion of the tube (the ampulla) just after ovulation. The oocyte is captured by the fimbriae and swept into the tube, where sperm that have traveled through the uterus meet it as it remains viable. Once the sperm penetrates the oocyte, a zygote forms and begins to divide while it moves toward the uterine cavity for implantation into the endometrium. The other sites aren’t correct because the uterine cavity is where implantation occurs, the ovary releases the egg, and the endometrium is the lining that supports implantation.

Fertilization happens where the egg and sperm meet in the fallopian tube, most often in the distal portion of the tube (the ampulla) just after ovulation. The oocyte is captured by the fimbriae and swept into the tube, where sperm that have traveled through the uterus meet it as it remains viable. Once the sperm penetrates the oocyte, a zygote forms and begins to divide while it moves toward the uterine cavity for implantation into the endometrium. The other sites aren’t correct because the uterine cavity is where implantation occurs, the ovary releases the egg, and the endometrium is the lining that supports implantation.