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.
, except where these have been incorporated into Chicano Cal. Nor does it list Mexican slang words and expressions unless they have originated in. Cal or have been incorporated into it with altered meaning. A few words can be traced to the. language of the Mexicas (Aztecs, pronounced meh-shi-ka).Others adapt English or indigenous languages of the Southwest.or does it list Mexican slang words and expressions unless they have originated in. Cal or have been incorporated into it with altered meaning. A few words can be traced to the. language of the Mexicas (Aztecs, pronounced meh-shi-ka). Others adapt English or indigenous languages of the Southwest.