Q.Describe the nervous system and sense organs of mammals.
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Start your 14-day free trial to unlock the full solution →[!ANSWER] The mammalian nervous system and sense organs are, relative to body size, the most elaborately developed of any vertebrate class.
Mammals possess the largest, most complex brain relative to body size among vertebrates, with an especially expanded cerebral cortex (the outer layer of the cerebrum), which in many mammal groups is thrown into deep folds (gyri and sulci) that greatly increase its surface area without requiring a larger skull. This expanded, folded cortex underlies the sophisticated learning, memory, problem-solving and social behaviour seen across mammal groups, to a degree generally exceeding that of reptiles, birds, or amphibians. …
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