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:
“One does not jump, and spring, and shout hurrah! at hearing one has got a fortune, one begins to consider responsibilities, and to ponder business; on a base of steady satisfaction rise certain grave cares, and we contain ourselves, and brood over our bliss with a solemn brow.”
—Charlotte Brontë (1816–1855)
“All that are printed and bound are not books; they do not necessarily belong to letters, but are oftener to be ranked with the other luxuries and appendages of civilized life. Base wares are palmed off under a thousand disguises.”
—Henry David Thoreau (1817–1862)
“Time is here and you’ll go his way.
Your lung is waiting in the death market.
Your face beside me will grow indifferent.
Darling, you will yield up your belly and be
cored like an apple.”
—Anne Sexton (1928–1974)