Urinary System
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What is the outer portion of he parenchyma of the kidney
Cortex
What are the two hormones produced by the urinary system
Renin Erythropoietin
What is the inner portion of the parenchyma of the kidney
Medulla
What is the functional unit of the kidney
Nephron
What are the two parts of the nephron
Renal corpuscle Tubular part
Main function of the renal corpuscle
Filtration
Main function of the tubular part
Absorption and secretion
Two parts of the renal corpuscle
Glomerulus Bowmans capsule
What are the two poles of the renal corpuscle
Vascular pole Urinary pole
What can be found at the vascular pole of the renal corpuscle
Afferent vessels enter Efferent vessels exit Afferent branch and form glomerulus
What can be found at the urinary pole of the renal corpuscle
Beginning of tubular part
What is the outer layer of Bowmans capsule made of
Simple squamous epithelium
What is the inner layer of Bowmans capsule made of
Podocytes
What is the filtration barrier between blood and urinary space in the glomerulus
Basement membrane
What is the composition of glomerular filtrate
Similar to plasma but contains almost no protein
Where will you find mesangial cells
Within the capillary walls of the glomerulus
What receptors do mesangial cells have on them
Angiotensin 2 Atrial naturetic factor
What functions do mesangial cells have
Structural support Synthesize extracellular matrix Endocytosis Control blood flow
What type of epithelium does the proximal convoluted have
Simple cuboidal epithelium
What are some of the characteristics of the epithelium of the proximal convoluted tubule
Numerous mitochondria Abundant microvili Abundant infoldings
What is absorbed back in the proximal convoluted tubules
Glucose Small proteins Amino acids 85%of water and NaCl
What is secreted in the proximal convoluted tubules
Creatinine Organic acids Organic bases
What are the 4 potential parts of the loop of Henley
Thick descending limb Thin descending limb Thin ascending limb Thick ascending limb
What are the two types of nephrons based on loop of Henley and location of the renal corpuscle
Cortical nephrons Juxtamedullary nephrons