. An analytical compendium of the various branches of medical science, for the use and examination of students. Anatomy; Physiology; Surgery; Obstetrics; Medicine; Materia Medica. THE LUNGS. 129 nular in its structure, has no excretory tube, but very large lym- phatic vessels. It. is supplied by the superior and inferior thyroid arteries. It is sometimes much enlarged, constituting bronchocele or goitre. THE LUNGS. The lungs are the organs of respiration properly; they are two in number, and situated in the thorax, placed side by side, being separated from the abdomen by the diaphragm. The siz
. An analytical compendium of the various branches of medical science, for the use and examination of students. Anatomy; Physiology; Surgery; Obstetrics; Medicine; Materia Medica. THE LUNGS. 129 nular in its structure, has no excretory tube, but very large lym- phatic vessels. It. is supplied by the superior and inferior thyroid arteries. It is sometimes much enlarged, constituting bronchocele or goitre. THE LUNGS. The lungs are the organs of respiration properly; they are two in number, and situated in the thorax, placed side by side, being separated from the abdomen by the diaphragm. The size varies with the capacity and condition of the thorax, age, inspiration, ex- Fig. piration, and disease. They are conical in shape, are longer pos- teriorly than anteriorly, and have concave bases. The colour of the lungs is of a pinkish-gray, mottled with black ; these black spots are more numerous in adult life than in infancy. The right lung is shorter but larger than the left, whose transverse diameter is somewhat diminished by the position of the heart. It has three lobes, the left having but two. The structure of the lungs is spongy, and its compression between the fingers produces a crackling called crepitation. .It consists of a number of air-vesicles held together by cellular tissue, called pa- renckynia ; through which blood-vessels and air-vessels are rami- fied, A certain number of air-cells communicate with each other, and with a single branch of the bronchial tube; these are separated. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Neill, John, 1819-1880; Smith, Francis Gurney, 1818-1878. Philadelphia, Lea and Blanchard
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