Urinary System Flashcards
System that rids waste produced by the body.
Urinary System
Term used to include both the urinary and reproductive organs?
Genitourinary
Alternative name for genitourinary?
Urogenital
Parts of the Urinary system?
- Kidney
- Ureters
- Urinary Bladder
- Urethra
Excretory organ of the urinary system?
Kidneys
Pipelines to the urinary bladder.
Ureters
Reservoir for urine?
Bladder
Waste pipe of the urinary system that leads outside?
Urethra.
Blood vessels of the urinary system?
Right and Left Renal Arteries
Right and Left Renal Veins
Vesical Arteries
Vesical Veins
Supply blood to the kidney?
Renal arteries
Drain blood from the kidneys?
Renal vein
Supply blood to the bladder?
Vesical arteries
Drain blood from the bladder?
Vesical veins
Medical terms for kidney?
ren and nephros
reddish brown bean shaped organ behind the peritoneum?
Kidney
Primary organ of excretion in the body?
Kidney
Alternative name for urination?
Micturition
Length of female urethra?
1-1.5 inches
Length of male urethra?
7-8 inches.
Thin muscular tube that drains urine from the bladder and conveys it out of the body?
Urethra.
Sphincter that encircles urethra providing voluntary control of urinization?
Urethral sphincter.
Capacity of urinary bladder?
500-1000mL.
Smooth muscular layer lining the urinary bladder?
Detrusor Muscle.
Smooth muscle sphincter at the junction of the urinary bladder and the urethra?
Internal urethral sphincter.
3 openings of the urinary bladder?
Internal urethral orifice (1) Urethral Opening (2)
Triangular region of the bladder base outlined by the urinary bladder openings?
Trigone.
Common site for infection in the urinary bladder.
Trigone.
Location of urinary bladder in males?
Anterior to rectum.
Location of urinary bladder in females?
Anterior to the vagina and uterus.
Smooth collapsible muscular sac that stores urine?
Urinary bladder.
3 layers of the ureter.
Outer Layer
Inner Layer
Middle Layer
Alternative name for outer layer of ureters?
Fibrous coat
Alternative name for middle layer of ureters?
Muscular coat.
Alternative name for inner layer of ureters?
Mucous coat.
Slender tubes that convey urine from the kidney to the bladder by peristalsis and gravity?
Ureters.
How does urine move down ureters?
Peristalsis and gravity.
Measurement of ureters?
10-12 inches.
Renal arteries are at right angles to what region?
Abdominal Aorta.
How much fluid does the kidney filter each day?
200 Litres a day
Function of the kidney?
Regulation composition, volume, removing toxins, metabolic waste, excess ions and pH of extra cellular fluid
Process that supply glucose during fasting?
Gluconeogenesis
Enzyme that helps produce and regulate blood pressure and kidney function?
Renin.
Where is renin produced in the kidney?
Juxtaglomerular cells.
another name for adrenal glands
Suprarenal glands
Hormone which stimulates red blood cell production?
Erythropoietin.
Chemicals produced in the kidney?
Gluconeogenesis
Renin
Erythropoietin
Vitamin D
Landmark of kidneys
T12 and L3
Which kidney is higher?
Left kidney
How many centimeters higher is the other kidney?
1.5-2 cm.
Weight of an adult kidney?
150 g
Dimensions of an adult kidney?
12 cm long, 6 cm wide, 3 cm thick.
Cleft found on the medial surface of the kidney that leads into the renal sinus?
Renal hilus
Space within the kidney?
Renal sinus.
Gland that lies on top of the kidneys?
Adrenal gland.
What structures enters the renal hilus?
Ureters, renal blood vessels, lymphatics and nerves.
What are the three layers of supportive tissue found around the kidney?
Renal capsule
Perirenal fat
Renal facia
Adheres directly to the kidney surface and isolates it from surrounding region?
Renal capsule
Attaches the kidney to posterior body wall and cushions it against trauma?
Adipose capsule
Adipose capsule is also known as?
Perirenal or perinephric fat.
Dense fibrous connective tissue which surrounds the kidney and anchors these organs to surrounding structures?
Renal Fascia
3 regions of the kidney?
Renal Cortex
Renal Medulla
Renal Pelvis
Most superficial region of the kidney which is light in colour and has a granular appearance?
Renal cortex
Deep in the renal cortex which is darker and exhibits cone shaped masses?
Renal medulla
Cone shaped masses found within the renal medulla?
Medullary Pyramids
Alternative name for medullary pyramids?
Renal Pyramids.
Parts of renal pyramid?
Base and apex
Alternative name for apex of renal pyramid?
Renal Papilla
Inward extensions of cortical tissue which separate each of the renal pyramids?
Renal columns.
Found within the renal sinus which acts as a flat funnel that continues to the ureter, leaving the hilus.
Renal pelvis.
2 to 3 short tubes into which the renal pelvis divides?
Major Calyces
Small cups which each major calyx divides (in kidney)?
Minor calyces
Structural and functional unit of the kidney?
Nephron
2 major parts of a nephron?
Renal Corpuscle
Renal Tubule.
Where filtration occurs
Renal corpuscle
Parts of renal corpuscle?
Glomerulus
Glomerular Capsule
Alternative name for glomerular capsule?
Bowman’s Capsule
Cells that line the glomerular capsule?
Podocytes
Blood vessel that supplies the renal corpuscles with blood?
Afferent arterioles
Blood vessel that drains the renal corpuscle?
Efferent arteriole
The renal tubule consists of?
Proximal Convoluted tubule
Loop of Henle
Distal convoluted tubule
Collecting tubule
Alternative name for loop of Henle
Loop of Nephron
Structure formed where distal convoluted tubule comes in contact with afferent arteriole?
Juxtaglomerular apparatus
3 processes in urine formation?
Glomerular filtration
Tubular reabsorption
Tubular secretion
Blood pressure forces plasma, dissolved substances and small proteins out of the glomeruli, into the Bowman’s capsule.
Glomerular filtration
What is plasma and dissolved substances called when it leaves glomeruli to the Bowman’s capsule?
Renal filtrate
Where does renal filtrate go after the Bowman’s capsule?
Renal tubule
During this process most of the nutrients, water and essential ions are reclaimed from the filtrate, and returned to the blood via surrounding connective tissue capillaries?
Tubular reabsorption.
How many percent is reabsorbed during tubular reabsorption?
99%
Undesirable molecules move into the tubule from the peritubular capillaries of the the kidney?
Tubular secretion
Flow of renal filtrate?
Renal Corpuscle
Proximal convoluted tubule
Loop of Henle
Distal convoluted tubule
Collecting duct
Calyx
Renal Pelvis
Ureter
Urinary Bladder
Urethra
How much blood is delivered to the kidneys in a minute?
1,200 mL
Blood flow path of kidney?
Renal artery - Segmental Artery - Interlobar Artery - Arcuate Artery - Interlobular Artery - Afferent arterioles - Efferent arterioles - Peritubular Capillaries - Vasa recta - Interlobular vein - Arcuate Vein - Interlobar Vein
Artery which is at right angles from abdominal aorta which supplies blood to the kidney?
Renal arteries
Renal arteries are at right angles to?
Abdominal Aorta
Renal artery divides into?
5 Segmental arteries
Artery which enters the kidney between the renal pyramids?
Interlobar Artery
Arteries which Pass out towards the kidneys surface?
Interlobular artery
Arch of blood vessels over the bases of the pyramid?
Arcuate artery
Unite to form the smallest vein, surrounding the renal tubule?
Peritubular capillaries