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during the cleavage stage

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Q: When is the nervous system most susceptible to damage by environmental factors during the development of the embryo?
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What are the factors that may hinder the proper development of the parts of the nervous system?

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What causes ancephaly?

As an isolated defect, anencephaly appears to be caused by a combination of genetic factors and environmental influences that predispose to faulty formation of the nervous system.


Diseases of the nervous system may result from?

Nervous system diseases can result from a number of factors. Not all diseases are fully understood yet. Causes may be genetic or environmental / toxins. Though injuries account for many nervous system disorders and conditions, these problems are not diseases.


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The different aspects of personality development?

DefinitionPersonality development is the development of the organized pattern of behaviors and attitudes that makes a person distinctive. Personality development occurs by the ongoing interaction with ones environment.DescriptionPersonality is what makes a person a unique person, and it is recognizable soon after birth. A child's personality has several components:Temperament is the set of genetically determined traits that determine the child's approach to the world and how the child learns about the world. There are no genes that specify personality traits, but some genes do control the development of the nervous system, which in turn controls behavior.A second component of personality comes from adaptive patterns related to a child's specific environment. Most psychologists agree that these two factors, temperament and environment, influence the development of a person's personality the most. Temperament, with its dependence on genetic factors, is sometimes referred to as "nature," while the environmental factors are called "nurture".


Which body system receives environmental messages and sends them to the brain?

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What organs appear very early in embryonic development?

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