ANAT 216 Lecture Notes - Lecture 5: Adenoid, Hyaline Cartilage, Mediastinum
13 Oct 2016
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Respiratory system: lecture 1 (nose to the primary bronchi) (reading material: chapter 24: pages 630-638) Functions: take in oxygen and expel carbon dioxide. Filter, humidify, warm air: respiratory portion respiratory bronchioles to alveoli. Respiratory tract epithelium: ciliated pseudostratified columnar with goblet cells (r. t. e. ) Nose and nasal cavity: nose is main entry of air, nostrils. Soft palate posterior: muscle, boundaries, structural components: Short thick hairs: filer out unwanted large products from air. Nasal fossae: the rest of the nasal cavity. Shape forces air to swirl around in nasal fossae. R. t. e: globlet cells, supported by loose connective tissue. Lets air pick up moisture (humidifies: many blood vessels in loose connective tissue underneath. Causes little trauma to cause a bleed: summary. Mucus secreted by goblet cells acts like glue that attaches to unwanted molecules. Cilia move like fingers to create current. Move mucus from nasal fossae to throat.
