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IGCSE · Cambridge (CIE) · 0654

Identify the five required female reproductive structures

Original front-view cutaway: five required structures. Ovaries lie near the oviduct ends; cervix is the narrow lower uterus, with vagina below.

Sexual reproduction in humans · Cambridge IGCSE 0654 · B15.4

Mapped to the named 0654 section using teaching from the corresponding single-science course. A 0654-specific review of every Core and Supplement objective is still in progress. Written practice is self-checked; it does not demonstrate supervised laboratory competence or award an official Cambridge grade.

Before you begin

  • Recall cell nuclei, gametes, diffusion, respiration and the difference between a cell and an organ.

Work on paper. Try each question before revealing help, and explain why your method works.

Quick readiness check

Where are egg cells produced?

What you will learn

  • Locate ovaries oviducts uterus cervix and vagina
  • Connect each structure with its reproductive function

Original teaching model.

Identify the five required female reproductive structuresOriginal front-view cutaway: five required structures. Ovaries lie near the oviduct ends; cervix is the narrow lower uterus, with vagina below.Female · selected front-view cutaway12345Pink inner edge · uterine liningOvaries lie near open oviduct ends
Original front-view cutaway: five required structures. Ovaries lie near the oviduct ends; cervix is the narrow lower uterus, with vagina below.
Structure and function key
FeatureMeaning
1 · OvaryProduces eggs; secretes oestrogen and progesterone
2 · OviductEgg transport; usual fertilisation site
3 · UterusImplantation and fetal development
4 · CervixNormally closed in pregnancy; dilates for birth
5 · VaginaReceives semen; birth canal

Locate ovaries oviducts uterus cervix and vagina

The female-system diagram is an original front-view cutaway. The central uterus has a muscular wall and an inner lining. Each upper side leads toward an oviduct with an ovary nearby. At the lower end, the narrow cervix connects the uterus with the vagina. A cutaway exposes internal spaces for learning; it does not mean the intact organs are transparent or always shaped exactly as drawn.

Ovaries produce egg cells and secrete the sex hormones oestrogen and progesterone. Released eggs enter the route near the oviducts; the hormones have roles explored in the separate sex-hormone pathway. Oviducts carry egg cells toward the uterus and are the usual site of fertilisation. The uterus provides the site where an embryo implants in its lining and where the fetus develops. The whole uterus is not an egg-producing cell and the oviduct is not simply a renamed ovary.

Connect each structure with its reproductive function

The cervix is the narrow lower part of the uterus, opening into the vagina. It normally stays closed during pregnancy, helping retain the fetus, and dilates during birth to allow the baby to pass. The vagina receives the penis and semen during intercourse and forms the birth canal. Follow the opening and channel rather than labelling the whole lower region “uterus”. In this diagram the female urethra is outside the required reproductive key: urine does not normally leave through the vagina.

Use connectivity to identify these structures on rotated or less familiar diagrams. Find the central organ, then its narrow lower neck and the channel below it; locate the tubes at its upper sides and the separate ovaries near their ends. A complete function answer gives five distinct roles. Diagram size and colour do not establish an individual’s reproductive health or an exact stage of pregnancy.

Sources for this lesson

Pause and explain

Which organ provides the normal implantation site?

Put the idea to work

Worked example

A label ends on the narrow neck below the uterus and above the vagina. Identify it.

Show the worked solution
  1. Follow the continuity from the uterus.
  2. Distinguish the neck from the channel below.

Answer Cervix: the narrow lower region of the uterus opening into the vagina.

Try a topic test

Choose Easy, Normal or Difficult. Save your answers and open worked review after finishing.

Test this topic →

From guided practice to a new situation

Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.

1 · Guided

Name model labels 1 and 2 and give their functions.

Give me a hint

Locate the organ near the tube end, then the tube.

Compare my reasoning
  1. Identify ovary as the producing organ.
  2. Identify oviduct as the carrying route.

1 ovary: produces egg cells; 2 oviduct: carries egg toward uterus and is the usual site of fertilisation.

Look for these in your work

  • Name both structures
  • Give their separate functions
2 · Independent

Name model labels 3, 4 and 5 with one function each.

Give me a hint

Follow central organ, narrow neck and lower channel.

Compare my reasoning
  1. Find the uterus and its lining.
  2. Trace cervix into vagina.

3 uterus: supports implantation and fetal development; 4 cervix: narrow lower region, normally closed in pregnancy and dilating for birth; 5 vagina: receives semen and forms the birth canal.

Look for these in your work

  • Use all three names
  • Distinguish organ neck and channel
3 · Transfer

A learner says the vagina produces eggs and the uterus receives them directly from a kidney. Correct the reproductive route.

Give me a hint

Separate egg production from urinary organs.

Compare my reasoning
  1. Start with ovary.
  2. Follow oviduct toward uterus.

Egg cells come from ovaries and pass into the oviduct route toward the uterus. The vagina receives semen; kidneys are urinary organs and do not produce eggs.

Look for these in your work

  • Correct the producing organ
  • Remove the urinary-route error

Common mistakes

  • The vagina is not the urinary exit.
  • An ovary and an oviduct are distinct structures.
Recall without your notes

What can you explain now?

Which organ provides the normal implantation site?

Compare with the explanation

Uterus lining

The developing embryo implants in that lining.

After trying it yourself, choose your next review. This is your self-assessment.

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Make it stick

Explain locate ovaries oviducts uterus cervix and vagina and connect each structure with its reproductive function. Use the diagram key and check your reasoning before opening the solutions.

If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.

Keep learning Sciences — Co-ordinated (Double)

Course scope and assessment

This 2028–2029 pathway maps all 152 detailed subject-content sections in the published 0654 syllabus to original teaching and staged practice. It adapts teaching from the related single-science pathways and excludes clear 0610-only topics such as classification systems, human excretion, tropic responses, food supply, population dynamics, detailed pollution and biotechnology. Some explanations may include wider single-science context. A 0654-specific objective-by-objective review, Core/Supplement audit, human subject-teacher review, supervised laboratory experience and cumulative assessment remain in progress. Written practice is self-checked and does not predict an official grade. The 2025–2027 syllabus has not been reconciled here; choose the 2028–2029 syllabus only.

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