Question

Growth of human brain from newborn to adult is
a. 100gm to 1kg
b. 400gm to 1.4kg
c. 0.2kg to 1.4kg
d. 1.4kg to 2.4kg

Answer 1

Hint: The brain is the power center of the human being body. A newborn baby possesses all of the brain cells (neurons) they will have for the rest of their life, but it’s the connections between these cells that actually make the brain work. Brain connections allow us to move, think, communicate, and do just about the whole thing. The early childhood years are decisive for making these connections.

Complete answer:
From birth to age 5, a child’s brain extends more than at any other time in life. And early brain development has a long-term impact on a child’s capability to learn and succeed in school and life.
The quality of a child’s skills in the first few years of life is positive or negative which helps figure how their brain matures.

At birth, the average baby’s brain is around a quarter of the size of the regular adult brain. Unbelievably, it doubles in size in the first year. It keeps rising to about 80% of grown-up size by age 3 and 90% – almost full-grown – by age 5.

At least one million original neural connections (synapses) are made every second, more than at any other time in life. Among human beings, the mass of the brain increases from 100gm to 1kg from newborn baby to adults.

Hence, the correct answer is option (A).

Note: Studies establish that the cerebral cortex, which is the constricted area on the surface of the brain responsible for superior mental functions, grows in a patchy fashion. Every region extends as the brain matures, but the study showed one-quarter to one-third of the cortex expands around twice as much as other cortical areas as an infant established into a young adult. The early childhood years are decisive for making these connections.