Structure of the lungs 0.0 / 5 ? BiologyHuman, animal and plant physiologyASAQA Created by: emily_wCreated on: 18-11-14 12:51 What is the function of smooth muscle? To contract to reduce airflow to the alvioli. 1 of 15 What is the function of elastic fibres? They return the airway to its original shape after the smooth muscle has contracted. 2 of 15 Where is the cartilage located? In the trachea 3 of 15 What can cause the constriction of the smooth muscle? Asthma or an allergic reaction 4 of 15 Why does the cartilage have to be c-shaped? You can move your neck without constricting airways; the oesphagus can expand. 5 of 15 How do the elastic fibres work? They recoil 6 of 15 When could the contraction of the smooth muscle be useful? If there is a fire/smoke 7 of 15 What is the function of the cartilage? Stops trachea and bronchi collapsing due to low pressure during exhalation. 8 of 15 Where are goblet cells found? In the trachea and bronchi 9 of 15 What is the function of goblet cells? They secrete mucus to trap pollen and other harmful particles, which can then be transported out of the body 10 of 15 What are ciliated epithelium? Cells in the trachea with a hair-like structure. 11 of 15 How do the ciliated epithelium move mucus? They waft in synchronisation 12 of 15 What is the function of ciliated epithelium? They force mucus upwards so it can be swallowed and the bacteria killed in the stomach. 13 of 15 How are ciliated epithelia adapted for their function? They have a lot of mitochondria to provide energy for movement. 14 of 15 How are ciliated epithelia damaged? By smoking or repeated vomiting (eg bulimia) because they are very fragile 15 of 15
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