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lezioni 16, 17, 18 2011 zoologia.pdf - DISAT

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Caratteristiche degli Anfibi<br />

• Atrio cardiaco diviso in due camere (destra con<br />

sangue venoso, sinistra con arterioso),<br />

ventricolo unico.<br />

• Escrezione dell’azoto sotto forma di urea<br />

accumulata in una vescica urinaria a terra, come<br />

ammoniaca quando in acqua.<br />

• Respirazione cutanea, respirazione<br />

buccofaringea (1-7%)

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