Arrange the parts of fallopian tube from medial to lateral order :

(a) Ampulla
(b) Infundibulum
(c) Interstitial
(d) Isthmus

Codes :

Appeared in: IGNOU PB. Bsc. Nsg. Entrance-2025

Explanation

The question asks to arrange the parts of the fallopian tube from medial (closest to the uterus) to lateral (closest to the ovary).
The correct anatomical sequence begins inside the uterine wall with the Interstitial part.
Moving outwards, the next segment is the narrow Isthmus.
This is followed by the wider Ampulla, where fertilization typically occurs.
The sequence ends with the funnel-shaped Infundibulum, which is the most lateral part near the ovary.
Therefore, the correct order is Interstitial (c), Isthmus (d), Ampulla (a), and Infundibulum (b).

Option A: This sequence (a, b, c, d) places the ampulla and infundibulum medially, which is incorrect. The ampulla and infundibulum are the lateral parts of the tube.
Option B: This sequence (c, b, d, a) incorrectly places the infundibulum (b) immediately after the interstitial part (c) and before the isthmus (d). The infundibulum is the most lateral part.
Option C: This sequence (a, d, c, b) starts with the ampulla (a) and places the interstitial part (c) between the isthmus (d) and infundibulum (b), which disrupts the correct medial-to-lateral flow.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Anatomy of the Fallopian Tube as background academic context rather than a clinical decision trigger.
Understanding the anatomy of the fallopian tube is crucial for comprehending female fertility and related pathologies.
The ampulla is the most common site of fertilization. It is also the most frequent location for an ectopic pregnancy, a life-threatening condition where a fertilized egg implants outside the uterus, often in the fallopian tube.
Blockage of the fallopian tubes (e.g., from infection like salpingitis) is a major cause of female infertility, as it prevents sperm from reaching the egg or the fertilized egg from reaching the uterus.

How to Approach the Question

First, identify the anatomical structure in question: the fallopian tube.
Next, understand the directional terms: 'medial' means closer to the midline (uterus), and 'lateral' means further from the midline (ovary).
Recall or visualize the four main parts of the fallopian tube: Interstitial, Isthmus, Ampulla, and Infundibulum.
Mentally trace the path from the uterus outwards to the ovary, placing each part in its correct location.
The path is: Uterus -> Interstitial part (in the uterine wall) -> Isthmus (narrow part) -> Ampulla (wide part) -> Infundibulum (funnel end near ovary).
Match this sequence (Interstitial, Isthmus, Ampulla, Infundibulum) with the given letter codes (c, d, a, b) to find the correct option.

Concept Tested & Keywords

Q9TLhnMkP4C-urT__OHSyz

E6 Physiology Ganong 27e Vol 2 Part 3 p. 149-151

E6 Anatomy Applied Ashalatha 4e p. 389-391

Practise the full IGNOU PB. Bsc. Nsg. Entrance-2025

Attempt every question from this paper in a timed mock, then review the full solution for each one.