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BUILD A PROCESS

Build the ovarian hormone cycle

Link a simplified non-pregnant cycle to hormonal feedback.

Build a process

Use the up and down buttons to build the sequence, then check your reasoning. Some biological events overlap; follow the simplified pathway described here.

  1. 1
    Regression without pregnancy
  2. 2
    Corpus luteum activity
  3. 3
    Ovulation
  4. 4
    Sustained high estradiol triggers an LH surge
  5. 5
    Dominant follicle grows
  6. 6
    Early follicular phase
Read the complete pathway
  1. Early follicular phase. Falling ovarian hormones permit FSH-supported follicle growth; menstruation overlaps this phase.
  2. Dominant follicle grows. Estradiol rises and the endometrium proliferates.
  3. Sustained high estradiol triggers an LH surge. Positive feedback promotes the surge near ovulation.
  4. Ovulation. The mature follicle releases the oocyte.
  5. Corpus luteum activity. Progesterone supports a secretory endometrium.
  6. Regression without pregnancy. Ovarian hormones fall and another cycle begins.

Explain what you observed

Is ovulation always on day 14?

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Your study notes

Take the next step

Connect this activity with your lesson notes and chapter practice.

Read a related learning guide →Practise Reproduction →Open the student notes folder ↗

Concepts and sources

Curriculum connections: 8.1, 8.2. Selected concepts.

Read the supporting source ↗PMDC curriculum ↗

Questions and explanations are original teaching material; these are not official exam questions.

Keep exploring Reproduction

Build a process

Trace the sperm pathway

Follow sperm from production to exit.

Sort & explain

Identify STI causative agents

Classify organisms and recognise why symptoms are not diagnosis.