MEDICAL PHYSIOLOGY

Detailed explanation-1: -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-2: -The average brain weight of the adult male was 1336 gr; for the adult female 1198 gr. With increasing age, brain weight decreases by 2.7 gr in males, and by 2.2 gr in females per year. Per centimeter body height brain weight increases independent of sex by an average of about 3.7 gr.

Detailed explanation-3: -The adult human brain is about 2% of total body weight. Men listen with the left side of the brain and women use both sides of the brain. The average human brain weighs about 3 pounds.

Detailed explanation-4: -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.

Detailed explanation-5: -The correct answer is 1200-1400. The average brain weight of the adult man is 1336 gram and for the Adult female is 1198 gram. At age 20, the average weight of the male brain is approximately 1400g and at the age of 65, brain weight is approximately 1300 g.