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The respiratory system (also respiratory apparatus, ventilatory system) is a biological system consisting of specific organs and structures used for gas exchange in animals and plants. The anatomy and physiology that make this happen varies greatly, depending on the size of the organism, the environment in which it lives and its evolutionary ...
The human nose is the first organ of the respiratory system. It is also the principal organ in the olfactory system. The shape of the nose is determined by the nasal bones and the nasal cartilages, including the nasal septum, which separates the nostrils and divides the nasal cavity into two. The nose has an important function in breathing.
Mucous membranes line the digestive, respiratory and reproductive tracts and are the primary barrier between the external world and the interior of the body; in an adult human the total surface area of the mucosa is about 400 square meters while the surface area of the skin is about 2 square meters.
After the initial batch of students finished five years of primary education, classes had to be extended to provide secondary education and in due course classes up to Year 13 were established. Due to the patronage of former principals Wimala Liyanage (1973–1982), and R. M. L. Jayasekera (1982–2000) the status of the school was raised to ...
The study found that for every hour that babies 8–16 months of age watched DVDs and videos, they knew 6-8 fewer of 90 common baby words than the babies that did not watch them. Andrew Meltzoff, a surveyor in this study, states that the result makes sense, that if the baby's "alert time" is spent in front of DVDs and TV, instead of with people ...
The British physician Charles Badham was the first person to describe the condition and name the acute form as acute bronchitis in his book Observations on the inflammatory affections of the mucous membrane of the bronchiæ, published in 1808. In this book, Badham distinguished three forms of bronchitis, including acute and chronic.
Ferguson High School (Sinhala: ෆර්ගසන් උසස් විද්යාලය) is a National School in Sri Lanka affiliated with the Sri Lanka Baptist Sangamaya located in Ratnapura District. [1]
10–30% each year (developed world) [1] [5] Sinusitis , also known as rhinosinusitis , is an inflammation of the mucous membranes that line the sinuses resulting in symptoms that may include production of thick nasal mucus , nasal congestion , facial congestion, facial pain , facial pressure, loss of smell , or fever .