Vagina

Vagina

Q. 1

The embryonic development of the vestibule of the vagina is from which of the following developmental structures?

 A

Genital ridge

 B

Wolffian duct

 C

Urogenital sinus

 D

Mullerian duct

Q. 1

The embryonic development of the vestibule of the vagina is from which of the following developmental structures?

 A

Genital ridge

 B

Wolffian duct

 C

Urogenital sinus

 D

Mullerian duct

Ans. C

Explanation:

Clitoris develops from three swellings of the somato-pleurae known as genital tubercle, urogenital folds and labioscrotal folds, while urethra, vestibule and lower vagina are derived from the urogenital sinus.


Q. 2

Which of the muscle in male is equivalent for vaginal sphincter in female?

 A

Levator prostatae

 B

Anococcygeal body

 C

Puborectalis

 D

Bulbospongiosus

Q. 2

Which of the muscle in male is equivalent for vaginal sphincter in female?

 A

Levator prostatae

 B

Anococcygeal body

 C

Puborectalis

 D

Bulbospongiosus

Ans. A

Explanation:

The sphincter vaginae (levator prostatae in the male) form a sling around the vagina and are inserted into a mass of fibrous tissue, called the perineal body.


Q. 3

Which of the following structure is related to lateral wall of vagina?

 A

Inferior vertical artery

 B

Ureter

 C

Middle rectal artery

 D

None of the above

Q. 3

Which of the following structure is related to lateral wall of vagina?

 A

Inferior vertical artery

 B

Ureter

 C

Middle rectal artery

 D

None of the above

Ans. B

Explanation:

Pelvic fascia, ureter and levator ani muscles inserted into the lower third of the vagina are seen lateral to the vaginal wall.
  • Anterior wall of the vagina is related to the urethra and base of the bladder.
  • Lower one third of the posterior vaginal wall is related to the perineum,  middle one third is related to the rectum and upper one third is related to the pouch of Douglas.
  • Cervix and the uterus lies above the vagina.
Vagina is a muscular tube extending from the vulva to the cervix.The cervix of the uterus enters the vagina making a right angle with the anterior vaginal wall which is 7.5cm in length. The posterior vaginal wall is 10cm long.

Q. 4

Which of the following embryologic structures give rise to the upper three fourth of vagina?

 A

Mullerian duct

 B

Urogenital sinus

 C

Sinovaginal bulb

 D

Wolffian duct

Q. 4

Which of the following embryologic structures give rise to the upper three fourth of vagina?

 A

Mullerian duct

 B

Urogenital sinus

 C

Sinovaginal bulb

 D

Wolffian duct

Ans. A

Explanation:

Upper three quarter of the vagina is developed from the fusion of the paramesonephric (mullerian) duct.

Lower one fourth is developed by the canalisation of the sinovaginal bulbs which form by the proliferation of the urogenital sinus. 

Structures developing from mullerain duct are:

  • Fallopian tubes
  • Uterus and cervix
  • Upper three fourth of vagina

Q. 5

Lower part of vagina develops from:

 A

Urogenital sinus

 B

Mesonephric duct

 C

Paramesonephric duct

 D

Mesonephric tubules

Q. 5

Lower part of vagina develops from:

 A

Urogenital sinus

 B

Mesonephric duct

 C

Paramesonephric duct

 D

Mesonephric tubules

Ans. A

Explanation:

Development of vagina

  • Upper part of the vagina derived from Mullerian ducts
  • Lower part from the sinovaginal bulbs (formed by fusion form the vaginal plate) all derived from the urogenital sinus.

Q. 6

Mucous membrane of vagina is lined by:

 A

Nonkeratinized Stratified Squamous epithelium

 B

Keratinized Stratified Squamous epithelium

 C

Columnar cells

 D

Cuboidal epithelium

Q. 6

Mucous membrane of vagina is lined by:

 A

Nonkeratinized Stratified Squamous epithelium

 B

Keratinized Stratified Squamous epithelium

 C

Columnar cells

 D

Cuboidal epithelium

Ans. A

Explanation:

Ans. A: Nonkeratinized Stratified Squamous epithelium


Q. 7

True for vagina: 

 A

Lined by columnar epithelium

 B

Anterior fornix is deepest

 C

Lacks mucus secreting glands

 D

Anterior wall is long as compared to posterior

Q. 7

True for vagina: 

 A

Lined by columnar epithelium

 B

Anterior fornix is deepest

 C

Lacks mucus secreting glands

 D

Anterior wall is long as compared to posterior

Ans. C

Explanation:

The vagina has no glands, and therefore must rely on other methods of lubrication. Plasma seepage from vaginal walls due to vascular engorgement is considered to be the chief lubrication source, and the Bartholin’s glands, located slightly below and to the left and right of the introitus (opening of the vagina), also secrete mucus to augment vaginal-wall secretions.


Q. 8

Least sensitive structure to radiation is:

 A

Uterus

 B

Cervix

 C

GIT

 D

Vagina

Q. 8

Least sensitive structure to radiation is:

 A

Uterus

 B

Cervix

 C

GIT

 D

Vagina

Ans. D

Explanation:

Ans. Vagina


Q. 9

Epithelium of vagina arises from‑

 A

Ectoderm

 B

Wolffian duct

 C

Mesoderm

 D

Mesonephric duct

Q. 9

Epithelium of vagina arises from‑

 A

Ectoderm

 B

Wolffian duct

 C

Mesoderm

 D

Mesonephric duct

Ans. C

Explanation:

Vagina is derived from two sources :-

  1. Upper 2/3rd : It is derived from Utero-Vaginal Canal, i.e. the fused part of paramesonephric duct. Therefore, this part is mesodermal in origin.
  2. Lower 1/3rd : It is derived from sinovaginal bulb which inturn is derived from urogenital sinus. Thus, this part is endodermal in origin.

Q. 10

The triangle shown in the picture below contains ? 

 A

Vagina.

 B

Urethra.

 C

Posterior labial nerves.

 D

All of the above.

Q. 10

The triangle shown in the picture below contains ? 

 A

Vagina.

 B

Urethra.

 C

Posterior labial nerves.

 D

All of the above.

Ans. D

Explanation:

The triangle shown in the picture above represents urogenital triangle.

The urogenital triangle is the anterior part of the perineum. it contains the vagina and associated parts of the external genitalia.


Q. 11

Length of Posterior vaginal wall is 

 A

Variable

 B

Same as anterior vaginal wall

 C

Less than anterior vaginal wall

 D

More than anterior vaginal wall

Q. 11

Length of Posterior vaginal wall is 

 A

Variable

 B

Same as anterior vaginal wall

 C

Less than anterior vaginal wall

 D

More than anterior vaginal wall

Ans. D

Explanation:

Ans. is ‘d’ i.e., More than anterior vaginal wall 

Vagina

  • The vagins is a fibromuscular, canal forming the female copulatory organ.
  • It extends from vulva to uterus.
  • Mucous membrane is lined by nonkeratinized stratified squamous epithelium.
  • The anterior wall is about 8 cm long and the posterior wall is about 10 cm long.
  • The lumen is circular at the upper end because of the protrusion of the cervix into it.
  • Below the cervix, anterior and posterior walls are in contact.
  • The interior of the upper end of the vagina (or vaginal vault) is in the form of a circular groove that surrounds the protrudng cervix.
  • The groove becomes progressively deeper form before backwards and is arbitrarily divided into four parts called the vaginal fornices :
  • Anterior fornix lies in front of the cervix and is shallowest.
  • Posterior fornix lies behind the cervix and is deepest.
  • Two lateral fornices lie one on each side of the cervix. Lateral fornix is related to the transverse cervical ligament of pelvic fascia in which are embedded a network of vaginal vein and the ureter gets crossed by the uterine artery.

Relations of vagina

  • Anterior wall
  • Upper half is related to the base of the bladder.
  • Lower half to the urethra.

Posterior wall

  • Upper one-fourth is separated from the rectum by the rectouterine pouch.
  • Middle two-fourths are separated from the rectum by loose connective tissue.
  • Lower one-fourths is separated from the anal canal by the perineal body and the muscles attached to it.

Lateral walls

One each side :

  • Upper one-third is related to the transverse cervical ligament of pelvic fascia in which are embedded a network of vaginal veins, and the ureter gets crossed by the uterine artery.
  • Middle one-third is related the pubococcygeus part of the levator ani.
  • Lower one-third pierces the perineal membrane, below which it is related to the bulb of the vestibule, the bulbospongiosus and the duct of greater vestibular gland of bartholin.

Arterial supply

  • Vaginal branch of internal iliac (main supply)
  • Cervicovaginal branch of uterine artery (in upper part).
  • Middle rectal and internal pudendal arteries (in lower part).

Q. 12

Which lymph nodes drain upper vagina & cervix‑

 A

Para aortic

 B

External iliac

 C

Superior inguinal

 D

Deep inguinal

Q. 12

Which lymph nodes drain upper vagina & cervix‑

 A

Para aortic

 B

External iliac

 C

Superior inguinal

 D

Deep inguinal

Ans. B

Explanation:

Ans. is ‘b’ i.e., External iliac 

  • The lymphatics from the cervix drain into the external iliac, internal iliac and sacral nodes. 
  • Lymphatic Drainage of uterus:
  • Fundus and upper body – aortic nodes and superficial inguinal nodes
  • Lower body – external iliac nodes
  • Cervix – external iliac, internal iliac and sacral nodes.
  • Lymphatic drainage of Vagina:
  • Upper 1/3 – external iliac nodes
  • Middle 1/3 – internal iliac nodes
  • Lower 1/3- superficial inguinal nodes

Q. 13

Vaginal wall is derived from ‑

 A

Endoderm

 B

Mesoderm

 C

Endoderm and mesoderm

 D

Ectoderm and mesoderm

Q. 13

Vaginal wall is derived from ‑

 A

Endoderm

 B

Mesoderm

 C

Endoderm and mesoderm

 D

Ectoderm and mesoderm

Ans. C

Explanation:

Ans. is ‘c’ i.e., Endoderm and mesoderm 

Vagina is derived from two sources :‑

  1. Upper 2/3″ : It is derived from Utero-Vaginal Canal, i.e. the fused part of paramesonephric duct. Therefore, this part is mesodermal in origin.
  2. Lower 1/3″ : It is derived from sinovaginal bulb which inturn is derived from urogenital sinus. Thus, this part is endodermal in origin.

Q. 14

All are derivatives of mullarian duct except ‑

 A

Fallopian tube

 B

Uterus

 C

Upper 2/3rd of vagina

 D

Lower2/3rd of vagina

Q. 14

All are derivatives of mullarian duct except ‑

 A

Fallopian tube

 B

Uterus

 C

Upper 2/3rd of vagina

 D

Lower2/3rd of vagina

Ans. D

Explanation:

Ans. is ‘d’ i.e., Lower 2/3rd of vagina 

PARAMESONEPHRIC DUCT (IVIULLERIAN DUCT) : Main genital duct in females 

Females                                    Males

Fallopian tubes                          Appendix of testis (Hydatid of morgagni)

Uterus                                      Prostatic utricle

Upper 2/3 of vagina



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