Physiology Review Conducting Zone Made up of rigid passageways that serve to warm, moisten, and filter the inhaled air: nose, nasal cavity, pharynx, larynx, trachea, primary bronchi, tertiary bronchi, bronchioles, terminal bronchioles. Air passages undergo 23 orders of branching in the lungs which significantly increases cross sectional area for flow
Himalayan Iris Pollen in REM. Most of our flowers and fruit have pollen which is entomophilous (i.e.carried by animals) and designed to stick to the leg of a bee or moth etc. Such grains tend to be like burs, with all sorts of strange miniscule hooks and spikes (they thus pose less of a problem for allergy sufferers–since they never make it to the nasal cavity). Other plants literally cast their hopes upon the wind. These anemophilous pollens are produced in large quantities.
Aztec mosaic mask of Tezcatlipoca (mexica) _The skull of the smoking mirror... The mexicas belived that the defeat of Quetzalcoaltl by Tezcaltlipoca marked the beginning of the current era of creation.The decoration is worked in alternate bands of bright blue turquoise and black mosaic.The eyes are made of two orbs of polished pyrite framed by rings of white conch shell.The nasal cavity is lined with plates of red shell. From Mexico Tenochtitlan