Chapter 9 (10) - Urinary System Flashcards
Urinary System
2 Kidneys, each with a ureter that leads to the bladder. From the bladder a urethra and meatus at the end of the urethra to let the urine out.
Excretory System
Balances water and electrolytes
- Removes waste from blood; excretes in urine
Kidneys
Retroperitoneal - Behind abdominal cavity, beside vertebrate
2 Functions:
- Form urine for excretion
- Retain essential substances in blood
- Water, Electrolytes, pH, Reabsorption
Kidney Anatomy
Renal Cortex - Outer portion, just inside renal capsule
Renal Medulla - Middle portion of the Kidney
Renal Pyramid - Made up of nephrons
Renal Hilum - Where Renal Artery, Vein, and Urethra enter/exit
Filters:
- Water, Salts (sodium, potassium), Sugar (glucose) - Nitrogenous Toxins: Urea, Creatine, Uric Acid
Renal Artery/Vein
Incoming Blood / outgoing blood, cleanest blood
Functional Unit of the Kidney
Nephron, about 1 million/kidney
Nephron Anatomy
- Renal Corpuscle
- Glomerulus:
- Capillaries - filtration of blood (by pressure)
- Bowman’s Capsule:
- Filtered Urine Captured
- 1st part of renal tubule
- Renal Tubule: Carries filtered fluid
- Proximal
- Loop of Henle
- Distal
- Collecting Duct
- Collecting Ducts Become:
- Renal Pelvis
- Ureter
- Bladder
- Urethra
Reabsorption w/in Kidneys occurs in:
Through a network of capillaries:
- Proximal Tube
- Loop of Henle
- Distal Tubule
Reabsorb - Water and substances needed for body
- Sodium, Glucose, Nutrients
Bladder
Hallow muscular organ that stores urine until excreted
Bladder Anatomy
- Trigone - Area where urethra is exiting and ureters are coming in
- Detrusor Muscle - Muscle in wall of bladder
- Sphincter Muscle - Around urethra, able to control and relax to urinate or contract to hold urine
- Micturition - Voiding (emptying bladder)
Cali (o) / Calic (o)
Calix
Cyst (o)
Bladder
Glomerul (o)
Glomerulus
Meat (o)
Meatus
Nephr (o)
Kidney
Pyel (o)
Renal Pelvis
Ren (o)
Kidney
Ur (o)
Urine
Ureter (o)
Ureter
Uria
of urine
Vesic (o)
Bladder, when describing something in relation to the bladder
ADH
Antidiuretic Hormone
ARF
Acute Renal Failure
BUN
Blood Urea Nitrogen
CRF
Chronic Renal Failure
ESRD
End-stage Renal Failure
ESWL
Extracorporeal Shock Wave Lithotripsy
IVP
Intravenous Pyelogram
K+
Potassium