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Using examples of invertebrate nervous systems how can the process of evolutionary cephalization be described?
Considering the instance of invertebrates it is observed that evolution makes the enhancing of the complexity of the organisms to be accompanied by convergence of nervous cells to special structures for controlling and commanding: the ganglia and the brain. In easy invertebrates, like cnidarians, the nervous cells are not concentrated but they are found dispersed in the body. In platyhelminthes a starting of cephalization with the anterior ganglion concentrating neurons is already verified. In annelids and arthropods the existence of a cerebral ganglion is evident. In cephalopod molluscs the cephalization is even big and the brain commands the nervous system.
The left coronary artery arises from the left posterior aortic sinus. It runs to the left behind the pulmonary trunk and appears between left auricle and pulmonary trunk. In that p
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Biochemical Reactions - Nitrate Assimilation Nitrate is the most readily available and preferred source of nitrogen for growth. Assimilatory reduction of NO - 3 to NH 3 is
Describe the main cycle in metabolism of cornea. Main Cycle: Glycolysis is represented by the central chain and involves the anaerobic conversion of glucose into pyruvic
Leukotrienes and prostaglandins are produced only when the mast cell undergo degranulation and enzymatic break down of phospholipids in the plasma membrane. The effects formed b
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Chemical Composition and Nutritive Values The nutritional quality of an oil meal protein will be affected by the processing conditions to which it is been exposed. Three major
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Why should you not apply cosmetics while doing a lab experiment in class?
You are working at a large, well funded research institute with the latest biochemical techniques available. The focus of your research is to find a specific mutation, or set of mu
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