ZOO 3000 Study Guide - Final Guide: Olfactory Mucosa, Lamina Propria, Hyaline Cartilage
11 Dec 2017
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Document Summary
Pages 662-682: consists of two sections, conducting portion, structures, nasal cavity, pharynx, larynx, trachea, bronchus, bronchiole, functions, to condition the air to maximize gas exchange and remove particles, filter particulates. Epithelia of conducting portions: epithelia of mucosa is pseudostratified and sits on top of thick basal membrane. Conducting bronchiole: tube with no cartilage plates or mucous cells, many mucous cells in smokers. Lung blood supply: dual blood supply pulmonary and bronchial. Pulmonary artery: carries deoxygenated blood, from right ventricle of heart, follows conducting portions of alveoli, oxygenated blood returns via pulmonary vein to left artery. Bronchial arteries: from branch of aorta (left ventricle, provide lung tissue other than alveoli with high o2 blood, so that lung cells don"t die. Respiratory bronchiole: thicker-walled sections (smooth muscle and clara cells, thinner-walled recess for gas exchange, clara cells protect the bronchiolar epithelium, produce secretion - have detoxifying agents and immune functions.
