Renal anatomy 1 Flashcards
How is the water conent of the body stored + differes between people
1/3 extra celular - intersitial + plasma
2/3 intracellular
60% men- muscle high in water have more than women
55% women- adpiose low in muscle woman have more than men
How much fluid does the kidney filter per minute, how much urine can it make a day
1200ml/min of blood filtered ->
makes 800-2000ml of unrine per day
What is urine + what can it be used for
Urine is waste made from
excess - metabolites, water, solutes, drugs
- urea, small proteins
has unregulated pH 46-8
Used in diagnostics-
glucose in blood -> reabsoption isnt working
large protein -> damaged filtration
RBC -> should never enter
What are the major organs of the renal system
2 kidneys
2 ureters
urine bladder
urethera
What is the location of the kidneys
Between T12-L3 - Ribs 11 and 12 - Reteroperitonially (renal fat pads around)
Convex side lateral, concave side medial + location of hilum
Hilum -> lymph blood nerve ureters
Right kidney lower due to liver position
What are the 4 main functions of the kidneys
Filter blood
reabsorb nutriance
excrete waste
protection - Ribs, renal fat pads, fiberous tissue layer
What is the Gross internal structure of the kidneys
Pelvix, cortex, medulla encased in fiberous tissue
cortex is continuous with the renal columns which go between each medullary pyramids
- point of medullary pyramid leads to renal papilla -> minor caylx
5-11 lobules per kidney
What is renal urine drainage + components of lobule
Lobule = medullary pyramid + surrounding cortex comprised of nephrons
Renal papila -> minor caylx -> major caylx -> renal pelvis –thinning -> ureters
What is the nervous suplly to the kidneys
Autonomic nerves + glangilion making the renal plexus -> regulate arteriol diameter and therefore regulate flowrate
What is the flow of blood into around and out of the kidneys
Into kidney: Abdominal aorta -> renal artery -> seris of branches to each cortex ->
Within kidney: afferent arteriol -> glomerulus capillaries -> efferent arteriol -> peritubular capillaries -> veins
- glomerulur capillarys for filtration
- peritubular capillaries for reabsoption
out of kidneys: series veins -> renal vein -> inferior vena cava
