When the fallopian tube is blocked at ampullary region, the ovum fails to move from
- Isthmus to Uterus
- Infundibulum Isthmus
- Isthmus to infundibulum
- Ovary to ampulla
The Correct Option is B
Approach Solution - 1
1. Fallopian Tube Structure: - Infundibulum: Funnel-shaped opening near ovary with fimbriae - Ampulla: Widest, longest section where fertilization typically occurs - Isthmus: Narrow section connecting to uterus
2. Normal Ovum Pathway: (1) Released from ovary → (2) Captured by infundibulum → (3) Travels through ampulla → (4) Passes isthmus → (5) Enters uterine cavity
3. Blockage at Ampulla Effect: A blockage in the ampullary region would prevent the ovum's movement from the infundibulum (where it enters the tube) toward the isthmus. The ampulla is located between the infundibulum and isthmus.
Thus, the correct answer is (B) Infundibulum to Isthmus, as this represents the normal direction of ovum movement that would be obstructed by an ampullary blockage.
Approach Solution -2
The ampullary region is the middle segment of the fallopian tube where fertilization typically occurs.
When blocked here, the ovum released from the ovary is captured by the infundibulum but cannot progress toward the isthmus.
This prevents the ovum's journey through the tube, making fertilization impossible.
The correct answer is (B) Infundibulum to Isthmus.
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Concepts Used:
Female Reproductive System
The female reproductive system provides various functions. The ovaries produce the egg cells known as the ova or oocytes. The oocytes are then taken to the fallopian tube where fertilization by a sperm may occur. The fertilized egg is then transferred to the uterus, where the uterine lining has thickened in regard to the normal hormones of the reproductive cycle. Once in the uterus, the fertilized egg can implant into the thickened uterine lining and continues to develop. If implantation does not take place, the uterine lining is shed as menstrual flow. In addition, the female reproductive system produces female sex hormones that preserve the reproductive cycle.
During menopause, the female reproductive system slowly stops making the female hormones that are required for the reproductive cycle work. At this stage, menstrual cycles can become irregular and finally stops. One year after menstrual cycles pause, the woman is deemed to be menopausal.