he human brain is like a powerful computer that stores our memory and controls how we as humans think and react. The brain is the center of the human nervous system, controlling our thoughts, movements, memories and decisions. Also, the brain contains billions of nerve cells that send and receive information around the body. Each side of the brain interacts largely with just one half of the body; the right side of the brain interacts with the left side of the body, and vice versa. Diseases of the brain include Alzheimer’s disease, Parkinson’s disease and multiple sclerosis. Diseases such as these can limit the normal function of the human brain.

here is no safe time to have unprotected sex if you wish to avoid pregnancy and sexually transmitted infections. STIs can be transmitted whenever an infected person has sex with an uninfected person, and pregnancy is always a possibility, even during a girl’s period. Although women are generally only fertile for a few days every month, most women have no definite way of knowing when this is. Sperm can also survive inside the body for several days, meaning a woman can potentially become pregnant over quite a long period of time.

alse. The size of the breasts does not affect the production of milk. As long as a woman does not have an hormonal imbalance for milk production, she should be able to breastfeed babies.