Your heart is one of the most important muscles in your body. Each day, your heart beats about 100,000 times and, over your life span, about 2.5 billion times! The fibrous pericardium encases, protects and secures the heart. Inside the pericardium is the heart wall, and this is organized into three main layers. The outermost layer of the heart wall is the epicardium, which is also the innermost layer of the pericardium.
Several different languages are spoken in Mexico, with a large majority of the population fluent in Spanish while some indigenous Mexicans are monolingual in indigenous languages.he slow process of replacing Mexico's indigenous languages with Spanish began with the arrival of Spanish forces and colonists in Mexico in the 16th century.
Mayan Indians speak a form of the Mayan language. The Mayan language family has about 28 different dialects. Most Mayan Indians also speak some Spanish. A number also speak English.A large number have come to the United States as illegal immigrants. They periodically return to their homeland.he Aztecs speak Nahuatl. The Incas speak Quechua. The Mayas speak various Mayan dialects including Cholan, Quiche, Yucatec and Lacandon. Edit. Share to: Mark Swarthout. 775,875 Contributions. Contract attorney. When not working I teach karate, collect stamps, write books, and play the ukulele.