BRAIN STEM: The part of the brain that connects to the spinal cord. The brain stem controls functions basic to the survival of all animals, such as heart rate, breathing, digesting foods, and sleeping. It is the lowest, most primitive area of the human brain. Controls heart beat, breathing. read more
The brain is the most complex organ in the human body, and perhaps the most remarkable. Start finding out how it works with our beginner's guide The brain is the most complex organ in the human body, and perhaps the most remarkable. read more