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| Human Cerebral is the biggest part of the brain |
The brain is the command center's of every biological and physical mechanisms performed by living things, including human. As the brain develops in the
early stages of pregnancy, it is very important to understand the health of the pregnant mother. Thus, maximum growth of brain development could be achieved, and both mother and the children are safe and healthy.
Although many environmental factors can affect the size of human cerebrum volume, these four factors may have informed you about the truth related the brain development.
Total Cerebral Volume
The brain consists of two cerebral hemisphere, the ventricles, the cerebellum, and the brain stem. The total size of the cerebral hemispheres changes little from childhood to adolescence, reaching 95% of its adult size by the age of 5 years. During these years, it is very crucial for a family to monitor the growth of infants and the health of the mother. The seeming discrepancy is due to the fact that head circumference does indeed increase from ages 4 to 18, but the increase is accounted for by an increase in skull thickness and less so by an increase in ventricular volume. Many factors including intelligence, handedness, psychiatric illness, body size, and gender, have been related to total brain size in teens as well as adults.
Intelligence equals larger size
Recent studies have found small but statistically significant relationships between brain size and intelligence. Although in the most robust of these findings IQ accounts for up to twenty per cent of the variance, this parameter should be considered in any group comparison. On the other hand, education and socioeconomic status have been considered as one of the aspect that influence the brain size as well, although interdependence factors including nutrition, vitamins,
prenatal care, and IQ is not clear.
Psychiatric history may increase the brain structure
The presence of abnormalities in the brain structure have been observed in many pediatric neuropsychiatric illnesses or mental disorder, and even more post acute syndrome, such as autism, attention deficit/ hyperactivity disorder (ADHD), childhood-onset schizophrenia, dyslexia, eating disorders, sleeping disorders, fetal alcohol syndrome, obsessive-compulsive disorder, Sydenham's chorea, and Tourette's syndrome. It is evident that a normative sample must be carefully screened to rule out these conditions. Likewise, affective disorders and substance abuse have been associated with structural anomalies in adults and should be considered as potential confounds in pediatric samples as well.
Body Size is not equal to brain
The relationship between brain size and body size in humans is surprisingly weak. In contrast to the relative stability of brain weight after childhood, body weight varies widely among individuals and can vary substantially within individuals from time to time. Height is also a poor indicator of brain size, as can be implied by contrasting the notable increases in height from ages 4 to 18 years with the lack of corresponding increase in brain size. This general trend for the young to have disproportionately large head-to-height ratios compared to adults is widely observed throughout the mammalian species.
Gender
As indicated by autopsy and imaging studies, the male brain is approximately 10% larger than the female brain across all ages. Surely, gross structural size may not be sensitive to sexually dimorphic differences in connectivity between different neurons, known differences in receptor density, or more subtle differences in the size or connectivity of various nuclei. Given the multiple parameters determining brain size, a larger size should not be interpreted as imparting functional advantage or disadvantage.
