The main stem of the Bay itself is about 189 miles (304 km) long, from the Susquehanna River in the north to the Atlantic Ocean in the south. At its narrowest point near Annapolis, Maryland, the Bay is 4 miles (6.4 km) wide; at its widest point, near the mouth of the Potomac River, it is 30 miles (50 km) wide.
Patau syndrome. Patau syndrome is a syndrome caused by a chromosomal abnormality, in which some or all of the cells of the body contain extra genetic material from chromosome 13. The extra genetic material disrupts normal development, causing multiple and complex organ defects.
Types of CMT. There are different types of CMT are all caused by different mutations (changes) in your genes. The most common types of CMT are outlined below. 1  CMT 1 - caused by defective genes that are involved in the production of the myelin sheath. 2  The defects cause the myelin sheath to slowly break down.