Biology · KS3 Y9 · Reproduction & Genetics

Gestation & the placenta

Gestation & the placentaFree10:34Heddy Score 3 of 7, below the standard
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What you need to know

  • Sperm have to survive a hostile journey before one can fertilise the egg.
  • The embryo implants in the uterus and grows a placenta.
  • The placenta shields the fetus and funnels glucose and other nutrients from the mother's blood.
  • That transfer can go too far and leave the mother short of energy, as in gestational diabetes.

In this clip

Runs 10:34, from 0:00 to 10:34 of the full video.

Heddy Score3/7, Below the standard
See the seven stars
  • Trusted source · passed. The creator's own upload, live and playable here.
  • On the map · not judged yet. A teacher watched it: it mainly teaches this map topic.
  • Spec-true · not judged yet. Accurate, and right for the current UK specification.
  • Focused · passed. One idea, short enough to watch in one go.
  • Accessible · passed. Good captions, clear sound and pictures.
  • Safe for children · not judged yet. Right for 11 to 16 year olds, with no sales pitch.
  • Proven · not judged yet. Earned from our students: they learn from it, find it helpful and watch it to the end.
★ passed · ☆ pending · ✕ failed
Our students

Not enough students yet

Our own students' answers. These are what move ★7 Proven.
On YouTube

3.68M views · 148K likes · Kurzgesagt – In a Nutshell 25.8M subscribers

As reported by YouTube on 2026-11-02. Not part of the Heddy Score.
How the Heddy Score works

Why we picked it

It follows the fetus from fertilisation to a working placenta, which is the feeding and protection the topic asks for.

Kurzgesagt – In a Nutshell on YouTubechecked 2026-10-20

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