why horse and rats donot have liver?
Answers
Answer:
The size of the liver of terrestrial mammals obeys the allometric scaling law over a weight range of >3 ∗ 106. Since scaling reflects adaptive changes in size or scale among otherwise similar animals, we can expect to observe more similarities than differences between rodent and human livers. Obvious differences, such as the presence (rodents) or absence (humans) of lobation and the presence (mice, humans) or absence (rats) of a gallbladder, suggest qualitative differences between the livers of these species. After review, however, we conclude that these dissimilarities represent relatively small quantitative differences.
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Answer:
The liver performs many other functions: production of bile, proteins for blood, cholesterol and special proteins to help carry fats, store and release glucose, transformation of harmful ammonia to urea, and creating immune factors.