Lining

... Cerebral Cortex C. Medulla D. Hypothalamus The Cerebellum being the region of the brain to control muscle movement The Cerebral Cortex, the outer lining of the cerebral hemisphere The Medulla regulates involuntary muscle action, breathing movements, diameter of blood vessels, heart rate... Hypothalamus ...

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... to divide to repair that damage. So, some cells are more susceptible to damage and therefore need to divide more often. Another example is the lining of the intestines and stomach. In the intestines cells need to continually divide because of all the material constantly being pushed though. ...

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... mentioned before, many fish ( Corydoras catfish, for example) can swallow air from the water's surface and absorb oxygen through their intestinal lining. Lungs evolved as a chamber of the intestine that gradually split off into its own organ. In essence, your thinking is dependent on the organ ...

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... mentioned before, many fish ( Corydoras catfish, for example) can swallow air from the water's surface and absorb oxygen through their intestinal lining. Lungs evolved as a chamber of the intestine that gradually split off into its own organ. In essence, your thinking is dependent on the organ ...

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... lungs evolved before legs as an off-shoot from the intestine; in fact Corydoras catfish today can "breathe" through their intestinal lining as an adaptation to life in poorly-oxygenated water. Lungs were probably very common in early fish, and many acquatic fish today (such as gar) ...

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