Essay About Renal Capsule And Collagen Fibers

Urinary System Components
Urinary System Components:
-Kidneys
-Ureters
-Urinary Bladder
-Urethra
urinary
tract
Functions:
1. Excretion (kidney):
remove organic wastes from blood
2. Elimination (UT):
discharge wastes to environment
3. Regulation of plasma volume and solute
concentration (kidney):
-blood volume, BP
-conc. of ions
-stabilize blood pH
-conserve nutrients
-assist liver: deamination, detoxification
4. Other kidney functions:
A. gluconeogenesis during starvation
B. produce renin (regulate BP)
C. produce erythropoietin (RBC production)
D. convert Vitamin D to calcitriol (Ca++
absorption in GI)
Kidneys
-1% body weight
-retroperitoneal, posterior abdominal wall
-adrenal gland anchored superior
-3 layers CT anchor kidneys:
1. Renal capsule: collagen fibers covering
organ
2. Adipose capsule: adipose cushion around
renal capsule
3. Renal fascia: collagen fibers fused to renal
capsule and deep fascia of body wall
and peritoneum
Renal ptosis = floating kidney: starvation or
injury, kidney loose from body wall,
could twist blood vessels or ureters
-Hilus: where renal
arteries, renal
veins, ureters
enter/exit
-Hilus opens to
renal sinus
-Renal sinus lined
with renal capsule,
contiguous with
outside
Kidney