the study of the physiology of the kidney.
each of a pair of organs in the abdominal cavity of mammals, birds, and reptiles that removes waste and extra fluid from your body.
where does kidney located?
lower lumbar region
kidney needs continuous blood supply from
its principal function is to remove toxins from the blood plasma and eliminate them from the body in the form of urine.
functional unit of the kidney
how many nephrons are found in each kidney?
approx. 1 to 1.5 million
2 kinds of nephrons
Cortical and juxtamedullary
make up 85% of total nephrons. reabsorb waste products and nutrients.
make up 15% of total nephron. it concentrates urine.
nephrons contribute to the main functions of the kidney by
Glomerular filtration, tubular reabsorption and tubular secretion
Renal blood flow
is the efferent arteriole bigger than the afferent arteriole?
afferent arteriole is bigger than efferent arteriole
final adjustment of urine
distal convoluted tubule
reabsorption of essential substances
proximal convoluted tubule
maintains osmotic gradient (salt concentration) in the medulla. are adjacent to the LOH in juxtamedullary nephrons
total renal blood flow
is a tuft of capillaries whose walls are made up of 3 layers. located within the bowman's capsule and is a non selective filter of plasma substances with molecular weight of
is substances with molecular weight lesser that 70,000 able to pass through the glomerulus?
substances that is higher than 70,000 will not be able to pass through and will go back to the blood stream
3 layers of glomerulus
capillary endothelium, basement membrane, podocyte epithelium (viscera of bowman's capsule)