The proximal and distal
convoluted tubules lie in
close proximity but histolo-
gically can be easily differ-
entiated.
The proximal tubule cells
Loop J are larger, the lumen smaller,
47 a brush border is present and
Henle cell boundaries are not well
differentiated, Electron=
microscopy reveals that the
cells interdigitate
In the distal tubule the
cells have a clear boundary
and do not demonstrate a
Ir brush border. They are
~ smaller and the lumen is
consequently greater,
/
Excretory
duct
CALYCES AND PELVIS
The minor calyces unite to form
major calyces which in turn unite
to form the pelvis of the kidney.
By means of excretion urography
the calcyces of a kidney can be
demonstrated radiologically.
There are strands of smooth
Strands 一 一 muscle around the necks of the
of smooth minor calyces which propel the
muscle urine into the pelvis.
URETHRA
Anterior
MALE URETHRA
Prostatic 一 一 一
Membranous
o
Verumontanu
Fossa navicularis
PROSTATE
Prostate : Pubo-prostate
ligament
ae we
e, A … ~
Ve]
Ze FAN «Later
SS ligament
SIA Buse
Levator ani SS 7
ESP = Rectum