https://padlet.com/stepho26/i5ypjqxffjqcy6h5 en-us 2021-08-11 23:50:58 UTC 2025-04-18 14:45:04 UTC hello@padlet.com stepho26 https://padlet.com/stepho26/i5ypjqxffjqcy6h5/wish/1676095188 AKA Conception
male = sperm: 23 chromosomes +
female = ovum: 23 chromosome

Both fuse together their genetic material together to form a zygote (a single cell with 46 chromosomes)]]> 2021-08-11 23:56:12 UTC https://padlet.com/stepho26/i5ypjqxffjqcy6h5/wish/1676095188 stepho26 https://padlet.com/stepho26/i5ypjqxffjqcy6h5/wish/1676097188 Starts at conception in one of the two fallopian tubes.

Fertilised egg = zygote.

few hours after conception, the single-celled zygote begins making a journey down the fallopian tube to the uterus.

The germinal stage ends when the blastocyst begins to implant into the endometrium]]> 2021-08-11 23:58:19 UTC https://padlet.com/stepho26/i5ypjqxffjqcy6h5/wish/1676097188 stepho26 https://padlet.com/stepho26/i5ypjqxffjqcy6h5/wish/1676097688 Short, Fast developments
(enormous changes)

Embryo = Sensitive to environmental influences

Body systems developed specialised tissues

Required for connections from the brain and spinal cord to the muscles and outer parts of the developing embryo to occur

Teratogens
- tobacco                          toxins
- alcohol
- medication = Interfere with formation]]> 2021-08-11 23:58:38 UTC https://padlet.com/stepho26/i5ypjqxffjqcy6h5/wish/1676097688 stepho26 https://padlet.com/stepho26/i5ypjqxffjqcy6h5/wish/1676097967 time from the ninth week until birth (full-term development)

- brain develops
- body adds size and weight


by 14 weeks = placenta is fully developed & functioning

PROVIDES

- oxygen, nutrients = growth
- removes waste products from their blood]]> 2021-08-11 23:58:59 UTC https://padlet.com/stepho26/i5ypjqxffjqcy6h5/wish/1676097967 https://padlet.com/stepho26/i5ypjqxffjqcy6h5/wish/1677553512 2021-08-13 01:24:25 UTC https://padlet.com/stepho26/i5ypjqxffjqcy6h5/wish/1677553512