Pelvis and Perineum Practice Questions

Q: Which of the following is present in males but not in females?

Bulbourethral gland. ***Bulbourethral gland*** - Also known as **Cowper's glands**, these are exocrine glands found **exclusively in males**, with no homologous structure in females. - They are located inferior to the prostate gland within the deep perineal pouch, secreting pre-ejaculate fluid into the spongy urethra. - Females have Bartholin's glands (greater vestibular glands), which are functionally analogous but anatomically distinct structures. *Bulbospongiosus muscle* - This muscle is present in **both males and females**, though it has different functions. - In males, it covers the bulb of the penis and aids in penile erection and ejaculation. - In females, it covers the vestibular bulbs and supports the clitoris and vagina. *Membranous urethra* - While the male urethra is anatomically divided into prostatic, membranous, and spongy segments, the female urethra also passes through the urogenital diaphragm (perineal membrane), which some anatomists refer to as a "membranous" portion. - The key distinction is that the bulbourethral glands are **exclusively male structures** with no female equivalent, making them the most definitive answer. *Corpus cavernosum* - **Both males and females** possess homologous erectile tissue. - In males, paired corpora cavernosa form the bulk of the penile shaft. - In females, homologous erectile tissue forms the body of the clitoris.

Q: Uterosacral ligament contains

Sympathetic and parasympathetic nerves. ***Sympathetic and parasympathetic nerves*** - The **uterosacral ligaments** are a component of the pelvic connective tissue that extends from the cervix to the sacrum, richly innervated [1]. - These ligaments are crucial for providing **nervous input** to the uterus and surrounding organs, including both **sympathetic** and **parasympathetic fibers**. *Mainly smooth muscle* - While ligaments are connective tissue, the **uterosacral ligaments** are primarily composed of **collagen** and **elastic fibers**, with some smooth muscle components, but not "mainly" smooth muscle [1]. - Their primary function is support, not contraction, distinguishing them from structures predominantly composed of smooth muscle. *Contain uterine vessels* - The **uterine vessels** (arteries and veins) are primarily located within the **broad ligament** (specifically, in the mesometrium) as they approach the uterus from the lateral pelvic wall. - While there might be small anastomosing vessels, the main uterine supply does not run within the uterosacral ligaments. *Ureters* - The **ureters** course through the pelvic cavity to reach the bladder, but they are not contained within the uterosacral ligaments. - They pass more laterally, close to the lateral fornix of the vagina, superior to the uterine artery, often remembered by the phrase "**water under the bridge**."

Q: Most important support of the uterus for preventing prolapse is:

Transverse cervical ligament. ***Transverse cervical ligament*** - The **transverse cervical ligaments (Cardinal ligaments)** are the primary static support for the uterus, anchoring the cervix and upper vagina to the lateral pelvic walls [1]. - They contain the **uterine artery and veins** and prevent the uterus from prolapsing downwards. *Round ligament of ovary* - This ligament connects the **medial pole of the ovary to the uterus**, specifically the lateral aspect of the uterus, just below the fallopian tubes. - Its primary role is to tether the ovary to the uterus and is not a significant support against uterine prolapse. *Pelvic floor* - The **pelvic floor muscles** provide dynamic support to the pelvic organs, including the uterus [2]. - While crucial for general organ support and continence, the pelvic floor is considered a secondary, rather than the most important primary, support for preventing immediate uterine prolapse compared to the strong static ligaments. *Round ligament of uterus* - The **round ligament of the uterus** extends from the uterus, through the inguinal canal, to the labia majora. - Its function is to help maintain the **anteversion of the uterus** and is a weak support for preventing uterine prolapse.

Q: Which of the following anatomic boundary separates the true pelvis from the false pelvis?

Linea terminalis. ***Linea terminalis*** - The **linea terminalis** is the imaginary line forming the boundary between the **true (lesser) pelvis** and the **false (greater) pelvis** [1]. - It delineates the **pelvic inlet** and defines the space where the pelvic organs are located [1]. *Ischial spine* - The **ischial spine** is a bony prominence within the **true pelvis** that serves as an important landmark for assessing fetal station during labor. - It does not separate the true from the false pelvis but is entirely contained within the true pelvis [1]. *Arcuate line* - The **arcuate line** is a part of the **linea terminalis**, specifically located on the ilium. - It forms only a segment of the complete boundary that separates the true and false pelvis. *Pectineal line* - The **pectineal line** (pecten pubis) is another component of the **linea terminalis**, located on the superior ramus of the pubic bone. - Like the arcuate line, it is a part of the overall boundary and not the entire separating structure itself.

Q: The anatomical space in the external female genitalia that contains the urethral and vaginal openings is the:

Vestibule. ***Vestibule*** - The **vestibule** is the anatomical space bordered by the labia minora, where the urethral and vaginal openings are located [1]. - It also contains the **the two Skene's ducts which open in the vestibule on either side of the external urethral meatus as well as the ducts of the greater vestibular (Bartholin's) glands** [1]. *Fossa navicularis* - The **fossa navicularis** is a small depression or boat-shaped area located between the fourchette and the vaginal opening. - It is a specific part of the **vestibule**, not the entire space containing multiple openings. *Labia minora* - The **labia minora** are two folds of skin that enclose the vestibule. - They form the **boundaries** of the vestibule, rather than being the space itself [1]. *Fourchette* - The **fourchette** is the posterior fold of tissue formed by the fusion of the labia minora. - It marks the **posterior boundary** of the vestibule, but is not the vestibule itself.

Q: Bartholin gland opening is at:

Inner side of labia minora external to hymen. ***Inner side of labia minora external to hymen*** - The **Bartholin glands** (also known as greater vestibular glands) are located on either side of the **vaginal opening**. [1] - Their ducts open into the **vestibule** just outside the **hymen**, specifically between the **labia minora**. [1] *Outer side of labia minora internal to hymen* - The opening is **not on the outer side** of the labia minora but rather on the inner face defining the vestibule. [1] - The opening is **external to the hymen**, not internal. [1] *Outer side of labia minora external to hymen* - The opening is located on the **inner, medial aspect of the labia minora**, not its outer surface. [1] - While correct that it is external to the hymen, the location relative to the labia minora is inaccurate. *Inner side of labia minora internal to hymen* - The opening is indeed on the **inner side of the labia minora**, forming part of the vestibule. [1] - However, the opening is consistently positioned **external to the hymen**, not internal. [1]

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.

Question 1

Which of the following is present in males but not in females?

Accepted Answer

Bulbourethral gland

Answer

Bulbospongiosus muscle

Answer

Membranous urethra

Answer

Corpus cavernosum

Question 2

Uterosacral ligament contains

Accepted Answer

Sympathetic and parasympathetic nerves

Answer

Mainly smooth muscle

Answer

Contain uterine vessels

Answer

Ureters

Question 3

Most important support of the uterus for preventing prolapse is:

Accepted Answer

Transverse cervical ligament

Answer

Round ligament of ovary

Answer

Pelvic floor

Answer

Round ligament of uterus

Question 4

All are true regarding course of ureter in pelvis except

Accepted Answer

Obturator vessels and nerve lie medially in relation to ureter at pelvic brim

Answer

It is crossed by ovarian vessels where it enters true pelvis

Answer

Ureter pierces lateral ligament where ureteric canal is developed.

Answer

Ureter passes over bifurcation of common iliac artery

Question 5

Which of the following anatomic boundary separates the true pelvis from the false pelvis?

Accepted Answer

Linea terminalis

Answer

Ischial spine

Answer

Arcuate line

Answer

Pectineal line

Question 6

The anatomical space in the external female genitalia that contains the urethral and vaginal openings is the:

Accepted Answer

Vestibule

Answer

Fossa navicularis

Answer

Labia minora

Answer

Fourchette

Question 7

Bartholin gland opening is at:

Accepted Answer

Inner side of labia minora external to hymen

Answer

Outer side of labia minora internal to hymen

Answer

Outer side of labia minora external to hymen

Answer

Inner side of labia minora internal to hymen

Question 8

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 9

Contents of broad ligament are all except

Accepted Answer

Internal pudendal artery

Answer

Uterine vessels

Answer

Round ligament

Answer

Infundibulopelvic Ligament

Question 10

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

Pelvis and Perineum — MCQs

Pelvis and Perineum — MCQs

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