T F Post-concussion syndrome requires a head injury where the person is knocked out. Brain Quiz Answers and explanations. Humans do not have the largest brains of all animals. Generally, the larger the head, the larger the brain. There is a rough correlation between brain weight and body weight between species, and usually, the closer the ratio the more intelligent the animal.
Men have larger brains than women because they have larger heads.
Probably, this has very little significance within any species, since big people are not smarter than little people. Gender differences and cognitive function is still an interesting area of research, but it probably does not involve brain size. The brain does not feel pain. You cannot have a brain ache, but there are pain receptors in the skull and sinuses, and that is where your headache comes from. When you are born, all your neurons are present.