Urinary system
Urinary system
Kidneys, ureters, bladder, and urethra.
44 structures
Abdomen
25Abdominal part of the ureter
A muscular conduit descending over psoas major
OrganAfferent arteriole
The regulated vascular inlet to a renal corpuscle
VesselCollecting duct system
The final regulated route through cortex and medulla
OrganDistal convoluted tubule
A cortical segment for controlled electrolyte recovery
OrganEfferent arteriole
The glomerular outlet that feeds another capillary bed
VesselInterlobar and arcuate arteries
Arteries traveling between the renal pyramids
VesselJuxtaglomerular apparatus
A local sensor linking tubular salt to vascular control
GlandKidney
A retroperitoneal organ for filtration and homeostasis
OrganLoop of Henle
Tubular limbs with contrasting transport properties
OrganNephron
A filtering corpuscle connected to a selective tubule
OrganPerinephric space and renal coverings
The renal fascial compartment and its internal planes
SpaceProximal convoluted tubule
A brush-bordered epithelium for bulk recovery
OrganRenal artery
Aortic inflow to the kidney's segmental territories
VesselRenal calyces
Branching urine-collecting cups in the renal sinus
OrganRenal corpuscle
The glomerular filter and its surrounding capsule
OrganRenal cortex
The glomerulus-containing outer renal tissue
OrganRenal hilum
The medial entrance into the renal sinus
SpaceRenal medulla and pyramids
The tubular and vascular core of the concentrating system
OrganRenal papilla
The pyramid tip opening into a minor calyx
OrganRenal pelvis
The upper urinary funnel between calyces and ureter
OrganRenal segmental arteries
Branches defining relatively independent renal territories
VesselRenal vein
Asymmetric venous outflow from the two kidneys
VesselUreter
A peristaltic connection from kidney to bladder
OrganUreteropelvic junction
The transition from renal funnel to ureter
OrganVasa recta
Medullary microvessels for exchange and oxygen delivery
VesselPelvis
19Detrusor muscle
The bladder's distensible smooth-muscle wall
MuscleExternal urethral sphincter
Striated muscle that supports urethral closure
MuscleFemale urethra
A short urinary outlet supported against the vagina
OrganInternal urethral sphincter
Autonomic smooth muscle at the bladder outlet
MuscleMale urethra
A shared outlet through prostate, perineum and penis
OrganMedian umbilical ligament
The midline urachal remnant above the bladder
LigamentMembranous urethra
The sphincter-associated segment below the prostate
OrganParaurethral (Skene's) glands
Secretory glands near the distal female urethra
GlandPelvic part of the ureter
The sidewall-to-bladder portion of the urinary conduit
OrganProstatic urethra
The urethral segment receiving reproductive ducts
OrganPubovesical and puboprostatic ligaments
Fibromuscular supports linking the outlet to the pubis
LigamentRectovesical pouch
A peritoneal recess between male bladder and rectum
SpaceRetropubic space
The extraperitoneal plane behind the pubic symphysis
SpaceSpongy (penile) urethra
The long urethral segment inside corpus spongiosum
OrganTrigone of the bladder
The smooth floor between ureteral and urethral openings
OrganUreteric crossing of the pelvic brim
The ureter's passage over the iliac arterial region
OrganUreterovesical junction
An oblique ureteral passage through the bladder wall
OrganUrinary bladder
A compliant pelvic reservoir with coordinated emptying
OrganVesical venous plexus
Communicating veins around the bladder outlet
Vessel