9-2 Goblet Cells, Ciliated Epithelium, Bronchioles (Cambridge AS A Level Biology, 9700) скачать в хорошем качестве

9-2 Goblet Cells, Ciliated Epithelium, Bronchioles (Cambridge AS A Level Biology, 9700)

In the Trachea and Bronchi, the epithelial layer is lined with 2 types of cells; the ciliated epithelial cells, and also the goblet cells. a. The goblet cells produce and release mucin/mucus which are sticky to help trap dust and pathogens b. The ciliated epithelium have cilia to produce and upward beating to remove the mucus from our airways. Together, both these cells help to filter the air entering our lungs. ________________________________________________________________________ The bronchioles have smooth muscles that can control the size of its lumen. During exercise... the smooth muscles in the bronchioles relax the lumen size increases more air enters the alveoli/less resistance for the air to enter the alveoli more oxygen can diffuse into the blood