Fill in the table “Features of the internal structure of reptiles”.

Organ system name Structural features
Respiratory system Cellular paired lungs
Circulatory system 2 circles of blood circulation, in the heart 3 chambers with an incomplete septum in the ventricle
Digestive system Same as amphibians
Musculoskeletal system 2 pairs of limbs located on the sides of the body
Excretory system The excretory system is represented by paired kidneys
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