EVERYDAY SCIENCE

Detailed explanation-1: -The adult human brain weighs about 3 pounds (1, 300-1, 400 g). The adult human brain is about 2% of the total body weight. The average human brain is 140 mm wide. The average human brain is 167 mm long.

Detailed explanation-2: -The average adult male weighs about 1370 grams, whereas the average brain weight of females is 1200 grams. Males’ brain weight falls by 2.7 grams and that of females’ falls by 2.2 grams annually as they age. Independent of sex, brain weight rises by an average of 3.7 gm for each centimeter of body height.

Detailed explanation-3: -The adult human brain weighs about 3 pounds (1, 300-1, 400 g).

Detailed explanation-4: -At age 20, the average weight of the male brain is approximately 1400 g, and by the age of 65 brain weight is approximately 1300 g. Brain weight for females follows a similar trend, although the total weight is 100–150 g less than that of males.

Detailed explanation-5: -The adult human brain weighs on average about 1.5 kg (3.3 lb). In men the average weight is about 1370 g and in women about 1200 g. The volume is around 1260 cm3 in men and 1130 cm3 in women, although there is substantial individual variation.