Fig. 3.Simplified structure and cellular organisation of the human respiratory tract epithelium. DC: dendritic cell; ILC: innate lymphoid cell; Trm: T resident memory cells; AT-I: alveolar type I cells; AT-II: alveolar type II cells. The nasopharyngeal/extrathoracic (nasal and oral cavities, ...
Additionally, the avian respiratory system rapidly translocates phagocytic cells onto the respiratory surface, ostensibly from the subepithelial space and the circulatory system: the mobilised cells complement the surface macrophages in destroying foreign agents. Further studies are needed to determine whether...
Tarsia puzzle on lungs and respiratory system (incl. effects of smoking on the body) Great as starter / plenary or revision activity. 24 cards per set (with 30 keywo
The airway epithelium is a pseudostratified cell layer lining the air-exposed surfaces of the conducting airways, providing a physical barrier between the sterile internal areas of the body and the environment. Specialised multiciliated cells, goblet cells and club cells provide additional protection by...
2.1). Inflammatory cells of the immune system, mainly lymphocytes, plasma cells and macrophages, are also seen migrating into the overlying epithelium. In strategic areas lymphoid cells aggregate into organised tissue masses forming the tonsils and adenoids. The bronchial tree and remainder of the ...
1. Describe how the structure of the alveolus within the respiratory system relates to its function. 2. Describe how the circulatory and respiratory systems work together in providing body cells with oxygenated blood. How do the organs in t...
-Specialised function is lost-Can predispose to cancer: squamous carcinoma What are the alveoli? -Blind ending sacs with thin waves for gaseous exchange-2 types of epithelium line the alveolus What is the alveoli epithelium? -Type I pneumocytes = flattened squamous epithelial cells, very thin ...
thereby suggesting that the local innate response to RSV infection in the airway is associated with an influx of neutrophils and their subsequent degranulation. Neutrophils are specialised innate phagocytic cells that are densely packed with granules containing hundreds of proteins with broad antibacterial ...
Cells throughout the body use oxygen for metabolism and cellular respiration, taking in molecular oxygen and producing carbon dioxide. Both gases are sent back and forth, between the cells throughout the body and the lungs (where carbon dioxide is dropped off and oxygen is picked up)....
(HSCT) are at markedly increased risk for significant morbidity or mortality from these infections. The infections are generally acquired by transmission of large respiratory droplets and can be nosocomial in origin with many documented outbreaks on specialised transplant units. Typically, the infections ...