Djurens utveckling Flashcards by Jennie Johansson | Brainscape

Q

Ontogeni

A

Utveckling från äggcell till vuxen individ

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Q

Apoptos

A

Programmerad celldöd

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Q

Tidigaste perioden (till v.12 hos människa)

A

Embryo

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Q

Äggcellens näringsförråd (reptiler)

A

Gulan

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Q

Embryots näringsförråd (däggdjur)

A

Moderkakan

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Q

Ägget delar sig och blir en ihålig cellboll

A

Blastula

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Q

Blastulan har två poler:

A

Animala polen och vegetativa polen

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Q

Skilland vegetativ och animala polen

A

Animal:
-gulefattiga celler

Vegetativa:

mer näring
växer långsamt
större celler

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Q

När sker formförändringar?

A

Gastrula

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Q

Gastrulans groddblad

A

Endoderm (lungor, mag-tarmkanalen)

Mesoderm (muskler, skelett, nervsystem)

Endoderm (huden, mycket nerver)

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