Pelvis and Perineum Practice Questions

Q: The fouchette is formed where

Both labia minora meet posteriorly. ***Both labia minora meet posteriorly*** - The **fourchette** is a fold of skin that represents the commissure (point of union) of the posterior ends of the **labia minora** [1]. - It forms the posterior border of the **vulvar vestibule** [1]. *Both labia minora meet anteriorly* - The labia minora meet anteriorly to form the **prepuce** (hood) and **frenulum** of the clitoris, not the fourchette [1]. - This anterior union is distinct from the posterior area of the fourchette. *Labia minora and majora meet* - The **labia majora** are the outer, larger folds, and they do not directly meet the labia minora in a single, defined commissure posteriorly to form the fourchette. - The folds delineate the **vulva**, but their meeting points are not termed fourchette. *Distance between vulva and labia minora* - The fourchette is an anatomical structure, specifically a **posterior commissure**, not a measure of distance between anatomical parts. - The term "distance" does not describe the specific anatomical landmark of the fourchette.

Q: Contents of broad ligament are all except

Internal pudendal artery. ***Internal pudendal artery*** - The **internal pudendal artery** is not a content of the broad ligament; it supplies structures in the perineum and external genitalia. [2] - Its course is typically outside the peritoneal folds that constitute the broad ligament. *Uterine vessels* - The **uterine artery and veins** are major contents of the broad ligament, specifically within its base (cardinal ligament), providing blood supply to the uterus. [1] - They run medially towards the uterus, crossing over the ureters. [2] *Round ligament* - The **round ligament of the uterus** is embryological remnant running within the anterior fold of the broad ligament. [3] - It extends from the uterus, through the inguinal canal, to the labia majora. *Infundibulopelvic Ligament* - The **infundibulopelvic ligament** (also known as the suspensory ligament of the ovary) is the most superior portion of the broad ligament, connecting the ovary to the lateral pelvic wall. [1] - It contains the **ovarian artery and vein**, along with nerves and lymphatic vessels. [1]

Q: Gartner's duct cyst lies in the

Anterolateral wall of vagina. ***Anterolateral wall of vagina*** - Gartner's duct cysts are remnants of the **mesonephric (Wolffian) duct** in females, which typically regress. - When segments of this duct persist and become distended, they form cysts usually located along the **anterolateral wall of the vagina**. *Lateral aspect of uterine wall* - While other **Müllerian anomalies** or **paramesonephric remnants** might be found near the lateral uterine wall, Gartner's duct cysts are specifically associated with the vaginal wall [1]. - Cysts in this location are less commonly attributed to Gartner's duct. *Posterior to ovarian ligament* - Structures posterior to the ovarian ligament often include **paratubal cysts** or **paraoophoron cysts**, which originate from different embryological remnants [2]. - This location is not characteristic for Gartner's duct cysts, which are typically found lower in the reproductive tract. *Upper edge of broad ligament* - Cysts found at the upper edge of the broad ligament are often **hydatid cysts of Morgagni** (remnants of the Müllerian duct) or **paraovarian cysts** [2]. - Gartner's duct remnants can rarely extend higher, but their classic cystic presentation is in the vagina.

Q: Which of the following group of lymph nodes does NOT receive direct lymphatic drainage from the perineum?

External iliac. ***External iliac*** - The external iliac lymph nodes do **NOT receive direct lymphatic drainage** from the perineum. - They primarily receive lymph from the **deep inguinal nodes**, pelvic organs (bladder, upper vagina), and lower anterior abdominal wall [1]. - Perineal lymphatics drain to superficial inguinal, deep inguinal, or internal iliac nodes first, making external iliac a **secondary or tertiary drainage station** rather than a direct recipient. *Superficial inguinal* - These are the **primary drainage site** for lymph from the superficial perineum. - They receive direct lymphatic vessels from the **vulva, distal vagina, labia majora**, scrotum, and skin of the perineum. - This is the main first-line drainage pathway for superficial perineal structures. *Internal iliac* - Internal iliac lymph nodes receive **direct lymphatic drainage** from the deep perineum, including the **male urethra, prostate**, and deep structures [2], [3]. - They serve as primary drainage for pelvic visceral structures and deep perineal tissues [3]. *Deep inguinal* - Deep inguinal lymph nodes receive lymph from the **superficial inguinal nodes** and from deep structures of the lower limb. - They are part of the drainage pathway from the perineum via the superficial inguinal nodes.

Q: Normal volume of adult testis

15-20 ml. 15-20 ml - The **most commonly cited normal adult testicular volume** is **15-20 ml**, which represents the **typical average range** for healthy adult males. - This measurement is assessed clinically using a **Prader orchidometer** or more precisely with **ultrasound**. - While the broader normal range extends to 25 ml, **15-20 ml is considered the standard reference range** in most medical textbooks and clinical practice. *25-30 ml* - A volume of **25-30 ml** is at the **upper limit or above** the normal range. - While **up to 25 ml** may be within normal limits, **25-30 ml** exceeds the typical accepted range and is **not the most representative** of normal adult testicular volume. *5-10 ml* - A testicular volume of **5-10 ml** in an adult is **significantly below normal** and indicates **testicular hypotrophy or atrophy**. - This could suggest conditions such as **hypogonadism**, **Klinefelter syndrome**, or other testicular pathology. *10-15 ml* - While **10-15 ml** may be observed in some adults, it is at the **lower end of the acceptable range** and may warrant further evaluation. - The **standard normal range begins at 15 ml**, making this option **below the typical normal volume** cited in most medical references.

Q: If both the alae of the sacrum are absent, it is called:

Robert's pelvis. Robert's pelvis - This condition is characterized by the **absence of both sacral alae** (wings), leading to a narrow and contracted pelvic inlet. - It is a rare, severe congenital malformation that can significantly impact the birthing process due to the **severely constricted birth canal**. *Triradiate pelvis* - A **triradiate pelvis** is typically associated with **osteomalacia** [1] or rickets, where the softened bones are pushed inwards, giving the pelvic inlet a three-pronged appearance. - Unlike Robert's pelvis, it does not involve the absence of sacral alae but rather a deformation due to inadequate mineralization. *Rachitic pelvis* - This term refers to a pelvis deformed by **rickets**, a condition caused by **vitamin D deficiency** leading to soft, weakened bones. - The classic finding is a **flattened anteroposterior diameter** with an increased transverse diameter, often resulting in a kidney-shaped inlet rather than absent alae. *Naegele's pelvis* - **Naegele's pelvis** is a rare, obliquely contracted pelvis caused by the **absence of one sacral ala** [1] and usually **ankylosis of the sacroiliac joint** on the affected side. - This differs from Robert's pelvis, where **both sacral alae are absent**, resulting in symmetrical but severe contraction.

Q: The most important structure preventing uterine prolapse is:

Cardinal ligament. ***Cardinal ligament*** - The **cardinal ligaments** (also known as transverse cervical ligaments) are crucial for supporting the uterus and preventing **uterine prolapse** by anchoring the cervix and upper vagina laterally to the pelvic sidewalls [1]. - They provide significant **suspension and stability** to the uterus due to their strong fibrous and muscular composition [1]. *Uterosacral ligament* - These ligaments attach the posterior cervix to the sacrum, primarily preventing **retroversion** of the uterus and providing posterior support [1]. - While they contribute to uterine support, their role in preventing descent is secondary to the cardinal ligaments [1]. *Broad ligament* - The **broad ligament** is a wide fold of peritoneum that drapes over the uterus, fallopian tubes, and ovaries, providing a suspensory role rather than strong structural support [1]. - It contains blood vessels and nerves but offers minimal support against **uterine prolapse** itself. *Round ligament* - The **round ligaments** extend from the uterine horns, through the inguinal canal, and insert into the labia majora, primarily helping to maintain the **anteverted and antiflexed position** of the uterus [2]. - They do not play a significant role in preventing the downward descent or **prolapse** of the uterus.

Q: Episotomy extended posteriorly beyond perineal body injuring structure posterior to it, which structure is injured?

External anal sphincter. ***External anal sphincter*** - An episiotomy extending posteriorly beyond the **perineal body** (the central tendon of the perineum) is likely to involve the **external anal sphincter (EAS)**, which lies immediately posterior to the perineal body. - Injury to the EAS can lead to **fecal incontinence** due to its role in voluntary control of defecation. *Urethral sphincter* - The **urethral sphincter** is located anterior to the vaginal introitus and is not typically affected by a posterior extension of an episiotomy. - Damage to the urethral sphincter would lead to **urinary incontinence**, not directly related to posterior perineal injury. *Ischiocavernosus* - The **ischiocavernosus muscle** covers the crus of the clitoris (or penis in males) and is located more laterally and anteriorly in the perineum. - Its primary role is in **clitoral (or penile) erection**, and it is generally not injured by an episiotomy, especially one extending posteriorly. *Bulbospongiosus* - The **bulbospongiosus muscle** surrounds the vaginal opening and bulb of the vestibule, lying superficial to the perineal membrane. - While an episiotomy cuts through this muscle, a posterior extension *beyond* the perineal body would primarily involve structures further back, such as the **external anal sphincter**, not just the bulbospongiosus.

Q: Episiotomy incision was extended posteriorly beyond perineal body injuring the structure immediately posterior to it. Which structure has been injured?

External anal sphincter. ***External anal sphincter*** - An overextended **episiotomy incision** that goes beyond the perineal body posteriorly will likely injure the **external anal sphincter**, which is immediately posterior to the perineal body [4]. - Injury to this sphincter can lead to **fecal incontinence** [1]. *Ischiocavernosus* - The **ischiocavernosus muscle** is located more laterally in the perineum and plays a role in clitoral erection, not directly posterior to the perineal body. - An episiotomy extending posteriorly would not typically involve this muscle. *Urethral sphincter* - The **urethral sphincter** is located anterior to the perineal body and surrounds the urethra [3]. - Injury to this sphincter is associated with anterior perineal trauma, not posterior extension of an episiotomy [3]. *Bulbospongiosus* - The **bulbospongiosus muscle** is a superficial perineal muscle that surrounds the vaginal orifice and contributes to the perineal body [4]. - While it can be involved in an episiotomy, the structure immediately posterior to the perineal body itself is the external anal sphincter [2].

Question 1

The fouchette is formed where

Accepted Answer

Both labia minora meet posteriorly

Answer

Both labia minora meet anteriorly

Answer

Labia minora and majora meet

Answer

Distance between vulva and labia minora

Question 2

Contents of broad ligament are all except

Accepted Answer

Internal pudendal artery

Answer

Uterine vessels

Answer

Round ligament

Answer

Infundibulopelvic Ligament

Question 3

Gartner's duct cyst lies in the

Accepted Answer

Anterolateral wall of vagina

Answer

Lateral aspect of uterine wall

Answer

Posterior to ovarian ligament

Answer

Upper edge of broad ligament

Question 4

Which of the following group of lymph nodes does NOT receive direct lymphatic drainage from the perineum?

Accepted Answer

External iliac

Answer

Superficial inguinal

Answer

Internal iliac

Answer

Deep inguinal

Question 5

Normal volume of adult testis

Accepted Answer

15-20 ml

Answer

25-30 ml

Answer

5-10 ml

Answer

10-15 ml

Question 6

If both the alae of the sacrum are absent, it is called:

Accepted Answer

Robert's pelvis

Answer

Triradiate pelvis

Answer

Naegele's pelvis

Answer

Rachitic pelvis

Question 7

The most important structure preventing uterine prolapse is:

Accepted Answer

Cardinal ligament

Answer

Uterosacral ligament

Answer

Broad ligament

Answer

Round ligament

Question 8

Bartholin's duct opens into the:

Accepted Answer

Vestibule at the posterolateral margins of the vaginal orifice

Answer

Urethra

Answer

Lower and posterior fornix of vagina

Answer

Upper part of vagina

Question 9

Episotomy extended posteriorly beyond perineal body injuring structure posterior to it, which structure is injured?

Accepted Answer

External anal sphincter

Answer

Urethral sphincter

Answer

Ischiocavernosus

Answer

Bulbospongiosus

Question 10

Episiotomy incision was extended posteriorly beyond perineal body injuring the structure immediately posterior to it. Which structure has been injured?

Accepted Answer

External anal sphincter

Answer

Ischiocavernosus

Answer

Urethral sphincter

Answer

Bulbospongiosus

Pelvis and Perineum — MCQs

Pelvis and Perineum — MCQs

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