Brain Stem. -connects brain to spinal cord. -made up of the midbrain, the pons, medulla. -act as pathways connecting various parts of the brain with each other. -controls involuntary actions.
One new study found that baby boomers (ages 49 to 67 in 2013) are living longer than people roughly 20 years older, but are not healthier.1 While they are less likely to smoke, have emphysema, or a heart attack, they are more likely to be obese, have diabetes, or high blood pressure than the previous generation at similar ages.
They are poised to surpass baby boomers (ages 51-69), who previously held the top title for largest generation in the U.S. This year, the number of millennials is expected to be at 75.3 million, while baby boomers are at 74.9 million. Millennials are growing because more immigrants in the age group are entering the country, according to the Pew Research Center.