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Updated: May 12, 2025
These convey to the lungs blood that has already been supplied with oxygen, passing it into the capillaries in the walls of the bronchi, bronchial tubes, and large blood vessels, as well as the connective tissue between the lobes of the lungs. This blood leaves the lungs partly by the bronchial veins and partly by the pulmonary veins.
Voice in mammals; in monkeys and man; in man; origin of, in air-breathing vertebrates. Von Baer, see Baer. Vulpian, Prof., on the resemblance between the brains of man and the higher apes. Vultures, selection of a mate by the female; colours of. Waders, young of. Wagner, R., on the occurrence of the diastema in a Kaffir skull; on the bronchi of the black stork.
It is almost immediately accompanied by a purulent secretion from the bronchi, and the second day does not pass without the characters of pneumonia being completely developed. The respiration is accompanied by a mucous 'rale' which often becomes sibilant. The nasal cavities are filled with a purulent fluid.
Its walls contain from sixteen to twenty C-shaped, cartilaginous rings, one above the other and encircling the tube. These incomplete rings, with their openings directed backward, are held in place by thin layers of connective and muscular tissue. At the lower end the trachea divides into two branches, called the bronchi, each of which closely resembles it in structure.
The lower end of the windpipe is just behind the upper part of the sternum, and there it divides into two branches, called bronchi. Each branch enters the lung of its own side, and breaks up into a great number of smaller branches, called bronchial tubes.
Species Organ Ascaris suis Intestines Oesophagostomum dentatum Large intestine Trichocephalus crenatus Large intestine Trichina spiralis Muscles and intestines Strongylus paradoxus Trachea and bronchi Sclerostoma pingencola Renal fat and kidney Species Organ Ascaris inflexa Intestine Spiroptera hamulosa Gizzard Heterakis papillosa Caecum Syngamus trachealis Trachea and bronchi
The scrofulous poisons, suppressed and driven back from the diseased glands in the neck, now find lodgment in the bronchi and lungs, where they accumulate and form a luxuriant soil for the growth of the bacilli of pneumonia and tuberculosis. "In other cases, the vocal organs become seriously affected by chronic catarrhal conditions, abnormal growths and in later stages by tuberculosis.
The lungs, the organs of respiration, are two pinkish gray structures of a light, spongy appearance, that fill the chest cavity, except the space taken up by the heart and large vessels. Between the lungs are situated the large bronchi, the oesophagus, the heart in its pericardium, and the great blood-vessels.
Each lung sprout again divides into two, and each of the two smaller buds again into two, until finally we have the whole chest filled up with a "lung-tree" whose trunk stems and leaves are hollow. The first two branches into which it divides form the right and left lung tubes, known as bronchi.
Trace the air tubes from the trachea to their smallest divisions. The windpipe and heart should be left attached and the specimen kept in a moist condition until used. Demonstrate the trachea, bronchi, and the bronchial tubes, and the general arrangement of pulmonary arteries and veins. Examine the pleura and show lightness of lung tissue by floating a piece on water.
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