OifactorymucosaB.lamina propriaSupporting--possesses theglands ofcellBowman--the ducts of glands reach theOlfactorycell中lumen--the secretion of the glandsBasalproduces a fluid environmentcellaround the olfactory cilia thatmay clear the cilia, facilitatingthe access of newodoriferoussubstancesBowman'sgland-Axons
Olfactory mucosa B. lamina propria -possesses the glands of Bowman -the ducts of glands reach the lumen -the secretion of the glands produces a fluid environment around the olfactory cilia that may clear the cilia, facilitating the access of new odoriferous substances. 11
II.Trachea and primary bronchiOlfactoryepitheliumNasal cavityNasopharynxOropharynxLarynxTracheaBronchiolesRespiratoryBronchbronchiolesLung福AlveolarductsTerminalalveoliDiaphragm12
Ⅱ. Trachea and primary bronchi 12
II.Tracheaand primary bronchiThe wall of the tracheais composed ofthreelayers:A. MucosaB.SubmucosaC. Adventitia
Ⅱ. Trachea and primary bronchi The wall of the trachea is composed of three layers: A. Mucosa B. Submucosa C. Adventitia 13
TRACHEAMUCOSASUBMUCOSA·ADVENTITIA14
MUCOSA SUBMUCOSA ADVENTITIA TRACHEA 14
II.Tracheaand primary bronchiA. Mucosa:1.epithelium(respiratoryepithelium):ciliated pseudostratified columnarepitheliumall types of cells touch the basement membrane2.laminapropria:looseconnectivetissue--containinterwovencollagenousandelasticfibers--manysmallvascularchannels--scattered lymphatictissue (diffuseandnodularforms)--seromucous glands--very cellular:numerous lymphocytes,plasma cells,etc15
Ⅱ. Trachea and primary bronchi A. Mucosa: 1. epithelium (respiratory epithelium): ◇ ciliated pseudostratified columnar epithelium * all types of cells touch the basement membrane 2. lamina propria: ◇ loose connective tissue -contain interwoven collagenous and elastic fibers -many small vascular channels -scattered lymphatic tissue (diffuse and nodular forms) -seromucous glands -very cellular:numerous lymphocytes,plasma cells,etc 15