The base of the lung is broad, concave, and rests upon the convex surface of the diaphragm, which separates the right lung from the right lobe of the liver, and the left lung from the left lobe of the liver, the stomach, and the spleen.
Since the human diaphragm extends higher on the right than on the left side, the concavity on the base of the right lung is deeper than that on the left.
Laterally and behind, the base is bounded by a thin, sharp margin which projects for some distance into the costodiaphragmatic recess of the pleura, between the lower ribs and the costal attachment of the diaphragm.
The base of the lung descends during inspiration and ascends during expiration.
Famous quotes containing the words base of, base and/or lung:
“In the land of turkeys in turkey weather
At the base of the statue, we go round and round.
What a beautiful history, beautiful surprise!
Monsieur is on horseback. The horse is covered with mice.”
—Wallace Stevens (1879–1955)
“What if it tempt you toward the flood, my lord,
Or to the dreadful summit of the cliff
That beetles o’er his base into the sea,
And there assume some other horrible form
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And draw you into madness?”
—William Shakespeare (1564–1616)
“Dylan used to sound like a lung cancer victim singing Woody Guthrie. Now he sounds like a Rolling Stone singing Immanuel Kant.”
—Also quoted in Robert Shelton, No Direction Home, ch. 2, “Prophet Without Honor” (1986)