In which of the following part of the fallopian tube, does fertilization occurs?
In which of the following part of the fallopian tube, does fertilization occurs?
The correct option is (B)
Explanation of correct option:
After the release of sperm into the female reproductive tract, these sperms being motile swim through the vagina to the cervix to the uterus and further up to the fallopian tube.
The fallopian tube is made of three regions:-
- Infundibulum: It is the funnel-shaped part of the fallopian tube that possesses finger-like projections called fimbriae at its edges which help in the collection of the ovum after ovulation.
- Ampulla: Ampulla is the wider part of the fallopian tube after the infundibulum.
- Isthmus: The isthmus is a narrow region of the fallopian tube that joins the uterus. Sperm travels from isthmus to ampulla.
The egg is collected by the fimbriae of the infundibulum and pushed by ciliated columnar epithelial cells to the ampullary region where sperm fertilize the egg.
Explanation of incorrect option:
Option (A):
The funnel-shaped region closer to the ovary is the infundibulum. The edges of the infundibulum possess finger-like projections called fimbriae, which help in the collection of the ovum after ovulation.
Option (C):
The narrow part of the oviduct that connects the ampulla and infundibulum to the uterus is called the isthmus.
Option (D):
The intramural part is the final and end part of the fallopian tube and is located in the upper region of the uterus. It is the narrow tubular part.
Final answer:
The ampulla is the region where fertilization takes place.
The correct option is (B)
Explanation of correct option:
After the release of sperm into the female reproductive tract, these sperms being motile swim through the vagina to the cervix to the uterus and further up to the fallopian tube.
The fallopian tube is made of three regions:-
- Infundibulum: It is the funnel-shaped part of the fallopian tube that possesses finger-like projections called fimbriae at its edges which help in the collection of the ovum after ovulation.
- Ampulla: Ampulla is the wider part of the fallopian tube after the infundibulum.
- Isthmus: The isthmus is a narrow region of the fallopian tube that joins the uterus. Sperm travels from isthmus to ampulla.
The egg is collected by the fimbriae of the infundibulum and pushed by ciliated columnar epithelial cells to the ampullary region where sperm fertilize the egg.
Explanation of incorrect option:
Option (A):
The funnel-shaped region closer to the ovary is the infundibulum. The edges of the infundibulum possess finger-like projections called fimbriae, which help in the collection of the ovum after ovulation.
Option (C):
The narrow part of the oviduct that connects the ampulla and infundibulum to the uterus is called the isthmus.
Option (D):
The intramural part is the final and end part of the fallopian tube and is located in the upper region of the uterus. It is the narrow tubular part.
Final answer:
The ampulla is the region where fertilization takes place.
