The oxygen exchange in the lungs takes place across the membranes of small balloon-like structures called alveoli attached to the branches of the bronchial passages. These alveoli inflate and deflate with inhalation and exhalation. The behavior of the alveoli is largely dictated by LaPlace's law and surface tension.
John Adams and his wife Abigail had six children. His oldest daughter, Abigail, was born in 1765, and future president John Quincy Adams was born in 1767. A second daughter, Susanna, was born in 1768, followed by Charles in 1770, Thomas Boylston in 1772 and Elizabeth in 1777. Continue Reading.
The president with the most children was President John Tyler, who served from 1841 to 1845. He had 15 children between the years 1815 and 1860. He had them with two different wives. Eight were with his first wife, Lettia Tyler, and the other seven were with his second wife, Julia Gardiner.