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Urinary System
Renal Function Slides 1-16
51
Anatomy
Undergraduate 2
03/24/2010

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Cards

Term
How much blood is filtered daily by the Kidneys?
Definition
200 liters
Term
What type of things leave the body in urine
Definition
Toxins, metabolic wastes, and excess ions
Term
What are the three major functions of the kidneys
Definition
Filter
Regulate volume and chemical makeup
Maintain proper balance between water and salts, acids and bases.
Term
What is Gluconeogenesis
Definition
Gluconeogenesis in the kidneys is the breakdown of glycogen to create glucose.
Term
What is produced by the kidneys which helps to regulate blood pressure
Definition
Renin
Term
What is produced by the kidneys which helps to stimulate RBC production.
Definition
Erythropoitin
Term
What is calcitriol
Definition
Vitamin D3- the active form of Vitamin D
Term
Urea makes up what percentage of the bodies nitrogenous wastes

What is it produced from?

Where
Definition
50%

protein catabolism

Liver
Term
How is Uric acid produced
Definition
nucleotide metabolism
Term
How is creatinine produced
Definition
metabolism of creatine phosphate
Term
What is BUN

What are the normal values?
Definition
Blood Urea Nitrogen

6-18 mg/dl
Term
Along with Renin, what also helps to regulate bp
Definition
Angiotensin II
Term
Define Metabolic waste
Definition
waste that our body produces
Term
What is a Nephron
Definition
The functional unit of a kidney
Term
What does retroperitoneal refer to?
Definition
The position of the kidneys behind the liver.
Term
Which kidney is lower
Definition
the right kidney
Term
What part of the kidney leads to the renal sinus
Definition
Term
Where do ureters, renal blood vessels, lyphatics and nerves enter and exit the kidneys
Definition
at the hilus
Term
What is the function of the paired ureters
Definition
transport urine from the kidneys to the bladder
Term
What is the function of the bladder
Definition
provides a temporary storage reservoir for urine
Term
What is the function of the urethra
Definition
transports urine from the bladder out of the body
Term
Function of the renal capsule
Definition
fibrous capsule that prevents kidney infection
Term
Function of Adipose capsule
Definition
fatty mass that cushions the kidney and helps attack it to the body wall
Term
Function of renal fascia
Definition
outer layer of dense fibrous connective tissue that anchors the kidney
Term
What is the cortex
Definition
the light colored granular superficial region
Term
What is the Medulla
Definition
exibits cone shaped medullary pyramids separated by columns
Term
What constitutes a lobe in the medulla
Definition
the medullary pyramid and its surrounding capsule
Term
What is the Renal pelvis
Definition
flat funnel shaped tube lateral to the hilus within the renal sinus
Term
What is the Major calyces
Definition
large branches of the renal pelvis
Term
Function of the Major calyces
Definition
collect urine draining from papillae

empty urine into the pelvis

From the pelvis it drains to the bladder through the ureters
Term
How much blood flows through the kidneys each minute?
Definition
one fourth (1200 ml) of systemic cardiac output
Term
Arterial flow into and out of the kidneys (venous and arteriole) follow similar or different pathways.
Definition
Similar
Term
What is the functional unit of the kidney
Definition
Nephron
Term
What is responsible for forming urine
Definition
nephron
Term
How many nephrons per kidney
Definition
1.2 million
Term
What is a nephron
Definition
a long tube with associated blood vessels
Term
What are the two parts of a nephron
Definition
Renal corpuscle

Renal tubule
Term
What does the renal corpuscle function as
Definition
blood filtration
Term
What does the renal tubule function as
Definition
processes filtrate into urine
Term
What does afferent refer to
Definition
something going into

entering
Term
What is a Glomerulus
Definition
a tuft of capillaries associated with a renal tubule
Term
What is another term for glomerular capsule
Definition
Bowman's capsule
Term
What is the Glomerular capsule
Definition
blind cup-shaped end of a renal tubule that completely surrounds the glomerulus
Term
What is glomerular endothelium
Definition
fenestrated epithelium that allows solute rich virtually protein free filtrate to pass from the blood into the glomerular capsule.
Term
What is larger in the kidneys Afferent or Efferent vessels
Definition
Afferent.... the vessels that allow the entry of things.
Term
How big are the endothelium fenestrations
Definition
70 to 90 nm
Term
What is the filtration membrane made up of
Definition
endothelium
Term
Podocytes
Definition
send out finger like projections called pedicels
Term
What are pedicels
Definition
fingerlike projections sent out from a podocyte
Term
What do pedicytes wrap around
Definition
capillary networks
Term
What is the basement membrane made out of
Definition
proteoglycan gel
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