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The Female Reproductive System

BiologyHuman ReproductionFor NEET aspirants

The female reproductive system produces the ovum and ovarian hormones, and supports ovulation, fertilisation, pregnancy, birth and child care. This page covers the ovaries, the fallopian tubes with their three parts, and the uterus with its three layers. It then covers the cervix, vagina, external genitalia and mammary glands, as in the NCERT Class 12 chapter Human Reproduction. NEET often asks the parts of the fallopian tube, the layers of the uterine wall and the path of milk through the mammary gland in the female reproductive system.

On this page1Overview2Ovaries3Fallopian tubes4Uterus5External genitalia6Mammary glands7Exam essentials8Quick revision9Solved examples10Practice
Key Points at a Glance
  1. Parts: a pair of ovaries, a pair of oviducts, uterus, cervix, vagina and external genitalia, in the pelvic region.
  2. ★ Must learn Ovaries are the primary female sex organs: they produce the ovum and steroid (ovarian) hormones.
  3. Each ovary is 2-4 cm long; its stroma has a peripheral cortex and an inner medulla.
  4. ★ Must learn Fallopian tube (10-12 cm), from ovary to uterus: infundibulum (with fimbriae) → ampulla → isthmus.
  5. Fimbriae collect the ovum after ovulation.
  6. ★ Must learn Uterine wall, outside to inside: perimetrium → myometrium → endometrium.
  7. Endometrium: cyclical changes in the menstrual cycle. Myometrium: strong contractions at delivery.
  8. Cervical canal + vagina = birth canal.
  9. External genitalia: mons pubis, labia majora, labia minora, hymen and clitoris.
  10. ★ Must learn Hymen: its presence or absence is not a reliable indicator of virginity or sexual experience.
  11. ★ Must learn Milk path: alveoli → mammary tubules → mammary duct → mammary ampulla → lactiferous duct → nipple.

1. Overview of the Female Reproductive System

  • The system lies in the pelvic region.
  • It consists of a pair of ovaries, a pair of oviducts, the uterus, cervix, vagina and the external genitalia.
  • ★ Exam imp These parts, together with a pair of mammary glands, are integrated structurally and functionally.
  • Together they support ovulation, fertilisation, pregnancy, birth and child care.
Memory Trick The five jobs of the system, in life order: Ovulation, Fertilisation, Pregnancy, Birth, Care. Read it as the story of one child: the egg is released, fertilised, carried, born and then cared for.
Sectional view of the female pelvis showing the reproductive system Side view of the female pelvis cut down the middle, facing left. The uterus, tilted forward, sits above and behind the urinary bladder, with a fallopian tube and ovary just above it. The cervix at its lower end opens into the vagina, which runs down to the vaginal orifice. Behind the vagina lies the rectum, ending at the anus, with the sacrum and coccyx further back. In front, the pubic symphysis lies before the bladder, and the urethra runs down from the bladder to open in front of the vagina. The external genitalia show the clitoris, the labia minora and the labia majora. Uterus Urinary bladder Urethra Pubic symphysis Clitoris Labium minora Labium majora Cervix Rectum Vagina Anus Vaginal orifice
Figure 1: Sectional view of the female pelvis showing the reproductive system. The uterus lies above and behind the urinary bladder and in front of the rectum, and opens through the cervix into the vagina.
Key idea
Ovaries, oviducts, uterus, cervix, vagina and external genitalia, with the mammary glands, work as one system.

2. Ovaries

  • ★ Exam imp Ovaries: the primary female sex organs.
  • They produce the female gamete (ovum) and several steroid hormones (ovarian hormones).
  • The ovaries lie one on each side of the lower abdomen.
  • Each ovary is about 2 to 4 cm long.
  • Each ovary is connected to the pelvic wall and the uterus by ligaments.
  • Each ovary is covered by a thin epithelium, which encloses the ovarian stroma.
  • The stroma has two zones: a peripheral cortex and an inner medulla.
  • Ovarian follicles in different stages of development are embedded in the stroma.
Memory Trick Ovary from outside in: Epithelium, Cortex, Medulla (E-C-M), the same order as in the adrenal and the kidney: cortex outside, medulla inside.
Key idea
The ovary, 2-4 cm long, makes the ovum and steroid hormones; its stroma has an outer cortex and an inner medulla.

3. Fallopian Tubes (Oviducts)

  • The oviducts (fallopian tubes), uterus and vagina form the female accessory ducts.
  • ★ Exam imp Each fallopian tube is about 10-12 cm long.
  • It extends from the periphery of each ovary to the uterus.

Parts of the fallopian tube, from the ovary to the uterus:

  1. Infundibulum: the funnel-shaped part closest to the ovary.
  2. Fimbriae: finger-like projections on the edges of the infundibulum; they help in collecting the ovum after ovulation.
  3. Ampulla: the wider part into which the infundibulum leads.
  4. Isthmus: the last part, with a narrow lumen; it joins the uterus.
Memory Trick From the ovary to the uterus: I Am Inside = Infundibulum, Ampulla, Isthmus. Fimbriae are the fingers on the first part.
Tips and Tricks Shape gives the order. The funnel (infundibulum) must face the ovary to catch the ovum; the wide part (ampulla) comes next; the narrow part (isthmus) joins the uterus. Wide is ampulla, narrow is isthmus.
Key idea
Fimbriae catch the ovum; the tube runs infundibulum → ampulla → isthmus → uterus.

4. Uterus, Cervix and Vagina

4.1 Uterus

  • The uterus is single and is also called the womb.
  • Its shape is like an inverted pear.
  • It is supported by ligaments attached to the pelvic wall.
  • The uterus opens into the vagina through a narrow cervix.
  • ★ Exam imp Cervical canal: the cavity of the cervix. The cervical canal and the vagina together form the birth canal.

4.2 Layers of the uterine wall

LayerPositionNatureRole
PerimetriumExternalThin, membranousOuter covering
MyometriumMiddleThick layer of smooth muscleShows strong contraction during delivery of the baby
EndometriumInner, lines the uterine cavityGlandular layerUndergoes cyclical changes during the menstrual cycle
★ Very important The uterine wall has three layers. The endometrium changes in every menstrual cycle, while the myometrium contracts strongly during delivery. The perimetrium is the thin outer membrane.
Memory Trick Outside to inside: Peri, Myo, Endo. Peri means around, myo means muscle, endo means inside. So the muscle layer sits in the middle.
Sectional view of the female reproductive system showing the uterus, fallopian tubes and ovaries Front view of the uterus, fallopian tubes and ovaries cut open. The uterus is an inverted pear with a rounded top, the uterine fundus, and a triangular uterine cavity lined by the endometrium, surrounded by the thick myometrium and the thin outer perimetrium. Below, the narrow cervix with its slit-like cervical canal opens into the ridged vagina. From each upper corner a fallopian tube arches outwards: a narrow isthmus next to the uterus, a wider ampulla, and a funnel-shaped infundibulum whose finger-like fimbriae reach the ovary. Each ovary, held to the uterus by a short ligament, is cut to show follicles at different stages. Fallopian tube Uterine fundus Isthmus Ampulla Uterine cavity Perimetrium Endometrium Myometrium Ovary Fimbriae Infundibulum Cervix Cervical canal Vagina
Figure 2: Sectional view of the female reproductive system. Each fallopian tube runs from its fimbriae and infundibulum through the ampulla and isthmus to the uterus, whose wall has the perimetrium, myometrium and endometrium.
Quick Recall: tap to check
Which part of the fallopian tube is funnel-shaped?
The infundibulum, the part closest to the ovary.
Which part of the fallopian tube has a narrow lumen and joins the uterus?
The isthmus.
Which layer of the uterus is made of smooth muscle?
The myometrium, the thick middle layer.
What forms the birth canal?
The cervical canal together with the vagina.
Key idea
Perimetrium outside, myometrium in the middle, endometrium inside; the cervix leads to the vagina.

5. Female External Genitalia

PartDescription
Mons pubisA cushion of fatty tissue covered by skin and pubic hair
Labia majoraFleshy folds of tissue that extend down from the mons pubis and surround the vaginal opening
Labia minoraPaired folds of tissue under the labia majora
HymenA membrane that often partially covers the opening of the vagina
ClitorisA tiny finger-like structure at the upper junction of the two labia minora, above the urethral opening
Memory Trick Five external parts: My Large Little Clever Helper = Mons pubis, Labia majora, Labia minora, Clitoris, Hymen.

5.1 Facts about the hymen

  • The hymen is often torn during the first coitus (intercourse).
  • It can also break from a sudden fall or jolt, insertion of a vaginal tampon, or active sports such as horseback riding and cycling.
  • In some women the hymen persists even after coitus.
  • ★ Exam imp So the presence or absence of the hymen is not a reliable indicator of virginity or sexual experience.
NEET Focus Statement traps from this section: the clitoris lies above the urethral opening; the labia minora lie under the labia majora; and the hymen is not a reliable indicator of virginity, because it can tear for many other reasons or persist after coitus.
Key idea
Mons pubis, labia majora, labia minora, hymen and clitoris form the external genitalia.

6. Mammary Glands

  • ★ Exam imp A functional mammary gland is characteristic of all female mammals.
  • The mammary glands are one of the female secondary sexual characteristics.
  • They are paired structures (breasts) containing glandular tissue and a variable amount of fat.
  • The glandular tissue of each breast is divided into 15-20 mammary lobes.
  • Each lobe contains clusters of cells called alveoli.
  • The cells of the alveoli secrete milk, which is stored in the cavities (lumens) of the alveoli.

Path of milk from the alveoli to the nipple:

  1. Alveoli open into the mammary tubules.
  2. The tubules of each lobe join to form a mammary duct.
  3. Several mammary ducts join to form a wider mammary ampulla.
  4. The mammary ampulla is connected to the lactiferous duct.
  5. The lactiferous duct opens at the nipple, from where milk is expressed during breastfeeding.
Memory Trick Milk path: All Tiny Drops Always Leave Nipple = Alveoli, Tubules, Duct (mammary), Ampulla, Lactiferous duct, Nipple.
★ Very important Milk is secreted by the cells of the alveoli and stored in their lumens. It flows through mammary tubules, a mammary duct and the mammary ampulla into the lactiferous duct, which opens at the nipple.
Tips and Tricks Two structures are called ampulla: the ampulla of the fallopian tube (where fertilisation occurs) and the mammary ampulla of the breast. Read the organ named in the question before you answer.
Sectional view of the mammary gland on the chest wall Side section of a breast lying on the chest wall, with the nipple pointing left. On the right, the pectoralis major muscle runs down in front of the ribs, which are cut across with the muscles between ribs and small blood vessels in the gaps. Inside the breast, pink grape-like clusters forming the mammary lobes, each made of many rounded mammary alveoli, sit in yellow fat under the skin. Thin mammary ducts from the lobes converge on the nipple; each widens into a small spindle-shaped ampulla and continues as a lactiferous duct opening at the nipple tip, which is surrounded by the darker areola. Fat Mammary lobe Mammary alveolus Mammary duct Ampulla Lactiferousduct Nipple Areola Rib Musclesbetween ribs Pectoralismajor muscle
Figure 3: Sectional view of the mammary gland. Milk made in the alveoli of each mammary lobe passes through the mammary duct and ampulla to the lactiferous duct, which opens at the nipple.
Quick Recall: tap to check
How many mammary lobes are present in each breast?
15-20.
Which cells secrete milk?
The cells of the alveoli; milk is stored in the lumens of the alveoli.
Which duct opens at the nipple?
The lactiferous duct, connected to the mammary ampulla.
Key idea
Alveoli make milk, which flows through tubules, ducts, the ampulla and the lactiferous duct to the nipple.

7. Exam Essentials

Pairs to Match

StructureFeature or role
OvaryPrimary female sex organ; ovum and steroid hormones
Ovarian stromaPeripheral cortex and inner medulla
LigamentsConnect the ovary to the pelvic wall and uterus; support the uterus
InfundibulumFunnel-shaped part of the oviduct closest to the ovary
FimbriaeCollect the ovum after ovulation
Ampulla (oviduct)Wider part of the oviduct
IsthmusNarrow lumen; joins the uterus
UterusWomb; inverted pear shape
Cervical canal and vaginaBirth canal
PerimetriumExternal thin membranous layer
MyometriumSmooth muscle; strong contraction during delivery
EndometriumGlandular; cyclical changes in the menstrual cycle
Mons pubisCushion of fatty tissue with skin and pubic hair
ClitorisUpper junction of the labia minora, above the urethral opening
Lactiferous ductOpens at the nipple
Exceptions
  • The uterus is single, though the ovaries and oviducts are paired.
  • The myometrium, not the endometrium, contracts strongly during delivery.
  • The endometrium, not the myometrium, shows cyclical changes during the menstrual cycle.
  • The presence or absence of the hymen is not a reliable indicator of virginity or sexual experience.
  • In some women the hymen persists even after coitus.
  • The isthmus, unlike the ampulla, has a narrow lumen.
  • Mammary glands are not primary sex organs; they are secondary sexual characteristics.

Numbers to Remember

  • Length of each ovary: about 2-4 cm.
  • Length of each fallopian tube: about 10-12 cm.
  • Zones of the ovarian stroma: 2 (cortex and medulla).
  • Parts of the fallopian tube: 3 (infundibulum, ampulla, isthmus), plus the fimbriae.
  • Layers of the uterine wall: 3.
  • Parts of the female external genitalia: 5.
  • Mammary lobes in each breast: 15-20.

8. Quick Revision

  • Female system in the pelvic region: 2 ovaries, 2 oviducts, uterus, cervix, vagina, external genitalia, plus 2 mammary glands.
  • Ovary: primary sex organ, 2-4 cm, held by ligaments; makes the ovum and steroid hormones.
  • Ovary: thin epithelium around the stroma; stroma = outer cortex + inner medulla, with follicles at various stages.
  • Accessory ducts: oviducts, uterus and vagina.
  • Fallopian tube 10-12 cm: infundibulum with fimbriae → ampulla → isthmus → uterus.
  • Fimbriae collect the ovum after ovulation.
  • Uterus (womb): single, inverted pear, supported by ligaments; opens into the vagina through the cervix.
  • Birth canal: cervical canal + vagina.
  • Uterine wall: perimetrium (thin) → myometrium (smooth muscle, contracts at delivery) → endometrium (glandular, cyclical).
  • External genitalia: mons pubis, labia majora, labia minora, hymen, clitoris.
  • Hymen can tear in many ways or persist; it is not a reliable indicator of virginity.
  • Mammary glands: all female mammals; 15-20 lobes; alveoli secrete milk.
  • Milk: alveoli → tubules → mammary duct → mammary ampulla → lactiferous duct → nipple.

9. Solved Examples

Solved Example 1
Match List I with List II.
List I: A. Fimbriae, B. Isthmus, C. Myometrium, D. Endometrium
List II: I. Cyclical changes during the menstrual cycle, II. Collection of the ovum after ovulation, III. Strong contraction during delivery, IV. Narrow part joining the uterus
Choose the correct answer:
(A) A-II, B-IV, C-I, D-III
(B) A-II, B-IV, C-III, D-I
(C) A-IV, B-II, C-III, D-I
(D) A-III, B-IV, C-II, D-I
Solution:

Answer: (B). Fimbriae collect the ovum (II); the isthmus joins the uterus (IV); the myometrium contracts at delivery (III); the endometrium changes cyclically (I).

Solved Example 2
Read the statements about the female reproductive system.
A. Each ovary is about 2-4 cm long.
B. The ovarian stroma has an inner cortex and a peripheral medulla.
C. The uterus is shaped like an inverted pear.
D. The cervical canal and the vagina form the birth canal.
E. Each fallopian tube is about 20-25 cm long.
Choose the correct answer:
(A) A, B and C only
(B) C, D and E only
(C) A, C and D only
(D) A, B, C and D only
Solution:

Answer: (C). B is wrong: the cortex is peripheral and the medulla is inner. E is wrong: each tube is about 10-12 cm long.

Solved Example 3
Arrange the parts through which milk flows, starting from the site of its secretion.
A. Lactiferous duct
B. Mammary tubules
C. Alveoli
D. Mammary ampulla
E. Mammary duct
Choose the correct answer:
(A) C, B, E, A, D
(B) C, E, B, D, A
(C) B, C, E, D, A
(D) C, B, E, D, A
Solution:

Answer: (D). Alveoli (C) → mammary tubules (B) → mammary duct (E) → mammary ampulla (D) → lactiferous duct (A) → nipple.

Solved Example 4
Which of the following is NOT a part of the female external genitalia?
(A) Mons pubis
(B) Labia minora
(C) Cervix
(D) Clitoris
Solution:

Answer: (C). The cervix is the narrow lower part of the uterus, inside the body. The external genitalia are the mons pubis, labia majora, labia minora, hymen and clitoris.

Solved Example 5
Statement I: The fimbriae are finger-like projections on the edges of the infundibulum.
Statement II: The infundibulum leads into the isthmus, the widest part of the oviduct.
(A) Both Statement I and Statement II are correct
(B) Statement I is correct but Statement II is incorrect
(C) Statement I is incorrect but Statement II is correct
(D) Both Statement I and Statement II are incorrect
Solution:

Answer: (B). The infundibulum leads into the wider ampulla; the isthmus is the last part and has a narrow lumen.

Solved Example 6
The clitoris lies:
(A) Below the urethral opening, between the labia majora
(B) At the upper junction of the two labia minora, above the urethral opening
(C) Inside the vaginal opening, under the hymen
(D) On the mons pubis, below the pubic hair
Solution:

Answer: (B). The clitoris is a tiny finger-like structure at the upper junction of the two labia minora, above the urethral opening.

10. Practice Questions

Practice Questions
  1. Match List I with List II.
    List I: A. Mons pubis, B. Labia majora, C. Labia minora, D. Hymen
    List II: I. Paired folds under the labia majora, II. Membrane partially covering the vaginal opening, III. Cushion of fatty tissue with pubic hair, IV. Fleshy folds surrounding the vaginal opening
    Choose the correct answer:
    (A) A-III, B-IV, C-I, D-II
    (B) A-IV, B-III, C-I, D-II
    (C) A-III, B-I, C-IV, D-II
    (D) A-III, B-IV, C-II, D-IAnswer: (A). Mons pubis-III, labia majora-IV, labia minora-I, hymen-II.
  2. Read the statements about the mammary glands.
    A. A functional mammary gland is found in all female mammals.
    B. Each breast has 5-10 mammary lobes.
    C. Milk is stored in the lumens of the alveoli.
    D. The mammary ampulla is connected to the lactiferous duct.
    E. Mammary glands are primary sex organs.
    Choose the correct answer:
    (A) A, B and C only
    (B) A, C and D only
    (C) C, D and E only
    (D) A, C, D and E onlyAnswer: (B). There are 15-20 lobes (B wrong); mammary glands are secondary sexual characteristics (E wrong).
  3. Arrange the layers of the uterine wall from the uterine cavity outwards: A. Myometrium, B. Perimetrium, C. Endometrium.
    (A) A, B, C
    (B) C, A, B
    (C) B, A, C
    (D) C, B, AAnswer: (B). Endometrium lines the cavity, the myometrium is in the middle, and the perimetrium is outside.
  4. Which of the following is NOT a female accessory duct?
    (A) Oviduct
    (B) Uterus
    (C) Vagina
    (D) OvaryAnswer: (D). The ovary is the primary sex organ; the oviducts, uterus and vagina are the accessory ducts.
  5. Draw a labelled diagram of the female reproductive system.Answer: Label the ovary, fimbriae, infundibulum, ampulla, isthmus (fallopian tube), uterine fundus, uterine cavity, endometrium, myometrium, perimetrium, cervix, cervical canal and vagina (Figure 2).
  6. Write the functions of (a) the endometrium and (b) the fimbriae.Answer: (a) The endometrium lines the uterine cavity and undergoes cyclical changes during the menstrual cycle; it is needed for implantation of the fertilised ovum. (b) The fimbriae help to collect the ovum after ovulation.
  7. Write two major functions each of the testis and the ovary.Answer: Testis: produces sperms (spermatogenesis) and secretes androgens from the Leydig cells. Ovary: produces the ovum and secretes steroid ovarian hormones.
  8. True or false: presence or absence of the hymen is not a reliable indicator of virginity or sexual experience. Explain.Answer: True. The hymen may tear from a fall or jolt, a tampon, or sports such as horseback riding and cycling, and in some women it persists even after coitus.

Common Mistakes to Avoid

Watch out
  • Calling the cortex the inner zone of the ovarian stroma. Correct: the cortex is peripheral and the medulla is inner.
  • Placing the ampulla next to the uterus. Correct: the order from the ovary is infundibulum, ampulla, isthmus; the isthmus joins the uterus.
  • Saying the endometrium contracts during delivery. Correct: the myometrium contracts; the endometrium changes cyclically.
  • Calling the myometrium glandular. Correct: the myometrium is smooth muscle; the endometrium is glandular.
  • Listing the cervix among the external genitalia. Correct: the cervix is part of the uterus; it forms the birth canal with the vagina.
  • Treating the hymen as proof of virginity. Correct: it is not a reliable indicator of virginity or sexual experience.
  • Saying the alveoli open directly into the lactiferous duct. Correct: alveoli → tubules → mammary duct → mammary ampulla → lactiferous duct.
  • Writing 15-20 alveoli per breast. Correct: 15-20 mammary lobes per breast, each with clusters of alveoli.

Frequently Asked Questions

What are the parts of the female reproductive system?

The female reproductive system has a pair of ovaries, a pair of oviducts (fallopian tubes), the uterus, the cervix, the vagina and the external genitalia, all in the pelvic region. With a pair of mammary glands, these parts support ovulation, fertilisation, pregnancy, birth and child care.

What are the parts of the fallopian tube?

Each fallopian tube, about 10 to 12 cm long, has a funnel-shaped infundibulum near the ovary, whose edges carry finger-like fimbriae. The infundibulum leads to the wider ampulla. The last part, the isthmus, has a narrow lumen and joins the uterus.

What is the function of the fimbriae?

The fimbriae are finger-like projections on the edges of the infundibulum of the fallopian tube. They help to collect the ovum after it is released from the ovary during ovulation, and pass it into the tube.

What are the three layers of the uterine wall?

The uterine wall has an external thin membranous perimetrium, a middle thick layer of smooth muscle called the myometrium, and an inner glandular endometrium lining the uterine cavity. The endometrium changes cyclically during the menstrual cycle, and the myometrium contracts strongly during delivery.

What forms the birth canal?

The birth canal is formed by the cervical canal, which is the cavity of the cervix, together with the vagina. The uterus opens into the vagina through the narrow cervix, and the baby passes through this canal at birth.

Is the hymen a reliable indicator of virginity?

No. The hymen may be torn during the first coitus, but it can also break from a sudden fall or jolt, a vaginal tampon, or sports such as horseback riding and cycling. In some women it persists even after coitus, so it is not a reliable indicator.

How does milk reach the nipple from the alveoli?

Alveolar cells secrete milk into the lumens of the alveoli. The alveoli open into mammary tubules, which join to form a mammary duct in each lobe. Several mammary ducts form a wider mammary ampulla, which connects to the lactiferous duct opening at the nipple.

Which points of the female reproductive system are most asked in NEET?

Learn the order infundibulum, ampulla and isthmus, the role of the fimbriae, the three uterine layers with their roles, the birth canal, the five external genitalia, the fact about the hymen, the 15 to 20 mammary lobes and the path of milk.

Previous year questions on The Female Reproductive System

4 questions from past papers, each with a step-by-step solution.

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