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.
The respiratory tract cleans, warms, and moistens air during its trip to the lungs. The tract can be divided into an upper and a lower part. The upper part consists of the nose, nasal cavity, pharynx (throat), and larynx (voice box). The lower part consists of the trachea (windpipe), bronchi, and bronchial tree.he exchange of these gases occurs across cell membranes both in the lungs (external respiration) and in the body tissues (internal respiration). Breathing, or pulmonary ventilation, describes the process of inhaling and exhaling air. The human respiratory system consists of the respiratory tract and the lungs.