Céphalocordés

in #biologie6 years ago

Chorde se prolonge au niveau de la
tête (=céphalon)

Exemple Amphioxus

Tégument unistratifié

Succession de muscles (myomères)

Pas de crâne

Animaux marins ( 5 -7 cm de long)

Nombre d’espèces : 13

A : anus ; B : bouche ; C : chorde ; Ch :
caecum hépatique ;

G : gonades ; I : intestin ; M : moelle ; Me :
métapleure ; My : myotome ;
Screenshot_2018-09-05-13-22-19.png
N : nageoire ; Pa : pore abdominal ; R :
rostre

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Very nice article thanks so much

Thank you great

Very nice article thanks so much

Very nice article thanks so much

je n'est rien compris a ça

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Great thanks

free good post thanks

Des informations précises et des chiffres sont quelque chose d'intéressant merci

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Thanks for the information