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.
Spanish, the official language of Mexico, is spoken by nearly the entire population and thus gives Mexico the world's largest Spanish-speaking community. Spanish, the official language of Mexico, is spoken by nearly the entire population and thus gives Mexico the world's largest Spanish-speaking community. With a good grasp of Spanish you will have no problem communicating in Mexico. A small number of inhabitants, about 1% of the population according to the last estimate, only speak native Amerindian languages or dialects. A larger percentage, some 6% at the last estimate, speaks some Amerindian language as well as Spanish. The government recognises 63 native Amerindian languages (apart from Spanish) as national languages. Unless you live in a remote local village, however, you will be fine with speaking Spanish in Mexico.