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Bronchial tree (anatomy)
BRONCHIAL TREE ANATOMY The bronchial tree is aptly named for its resemblance to the branches of a tree, as larger tubes perpetually concede to smaller tube in an intricate framework of branches. Right around the level of the sternal angle, just posterior to the manubrium, the trachea splits off into the more...
Muscle cramp (diseases)
Whenever we move parts of our bodies such as our arms and legs, the muscles contract and relax in turns. Whenever these muscles make an involuntary movement, this uncontrolled motion is known as a spasm. A particularly strong spasm is called a cramp, and it causes the muscle to visibly more...