KIDNEYS
Categories:
Kidney and Bladder
The kidneys are deeply placed and cannot be felt or distinctly
identified when normal. They are most accessible to pressure just below
the last rib, behind. The right kidney usually lies lower than does the
left, but even then, the lower part of this kidney is an inch above the
upper part of the hip bone, or an inch above a line drawn around the body
parallel with the navel. The kidney is about four inches long. The long
axis
of the kidneys corresponds to that of the twelfth rib; on an average
the left kidney lies one-half inch higher than the right.
As stated before, each kidney is four inches long, two to two and one-half
in breadth, and more than one inch thick. The left is somewhat longer,
though narrower, than the right. The kidney is covered with what is called
a capsule. This can be easily stripped off. The structure of the kidney is
quite intricate. At the inner border of each kidney there is an opening
called the pelvis of the kidney, and leading from this, small tubes
penetrate the structure of the kidney in all directions. These tubes are
lined with special cells. Through these tubes go the excretions (urine)
from the body of the kidneys, to the pelvis, and from the pelvis through
the ureters, sixteen inches long, to the bladder.