Fill in the table “Features of the structure of the internal organs of the frog”.
October 30, 2020 | Education|
|Organ system name||Structural features|
|Digestive||Same as fish|
|Respiratory||The respiratory organs are the lungs and the skin, which has a large number of glands.|
|Circulatory||In amphibians, a second circle of blood circulation appears, in the heart it becomes three-chambered, 2 atria and a ventricle|
|Nervous||Consists of central and peripheral parts, the brain is better developed than in fish|
|Excretory||The kidneys that are on the sides of the spine|
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