Salsa de Molcajete. Salsa de Molcajete refers to a salsa that is ground by hand in a molcajete, Mexico's version of the mortar and pestle. Nearly all salsas used to be prepared this way, but now many cooks use blenders and food processors. Because of this, even in Mexico the term evokes nostalgia for the handmade quality of bygone days.
Overview. The major passages and structures of the upper respiratory tract include the nose or nostrils, nasal cavity, mouth, throat (pharynx), and voice box (larynx). The respiratory system is lined with a mucous membrane that secretes mucus.
Air flow Sequence. The sequence in which incoming air flows through the upper respiratory tract is as follows: 1  Normally air enters the respiratory system through two external nares (openings of the nose) and proceeds through the nasal cavity and sinuses. 2  Air is warned, filtered, and moistened.ntroduction. The respiratory system consists of the nose, nasal cavity, pharynx, larynx, trachea, bronchial tree, and the lungs. Its primary function is the basic exchange of oxygen and carbon dioxide.