27/agender/introverted/panromantic/gray ace/struggling with sobriety/blah blah blah. Singular «they» only. I mainly reblog queer stuff, vegan desserts, Los Angeles news/pictures, bicycles, books, tattoos, True Blood, but of course other random things I like as well. Friends/questions/followers are always welcome
The kidney is a fascinating and under-appreciated organ. Even its name is interesting: while the Greek nephrosand the Latin renesare both used as medical terms for the kidney and its anatomy, the origin of the common name in English - “kidney” - is actually unknown. It may be from the Old English terms cwið (womb) + ey(egg), from its shape, but there is no clear consensus on its origins.
The kidney serves many functions, but its most obvious is creating urine. The process of doing that is surprisingly complex, and involves regulation of blood pressure, re-absorbing vital nutrients, excreting urea from protein catabolism, and secreting hormones such as erythropoietin (which stimulates red blood cell creation).
These are four major sections of the kidney:
Capsule - A tough, fibrous layer of tissue, surrounded by a thick layer of fat, which protects the kidney.
Cortex - Just inside the capsule, the outermost layer of the kidney itself, which contains renal corpuscules and tubules. Ultrafiltration and erythropoietin production happens here.
Medulla - The inner tissue of the kidney, split up into renal pyramids. This is where the arteries split up, serum comes out of the blood, and ions and glucose are processed.
Renal Pelvis - This is the convergence point of the major calcyes, and funnels urine into the ureter, which goes to the bladder. The transitional epithelium in this section of the kidney is the cause of many types of kidney cancers.
Anatomy: Descriptive and Applied. Henry Gray, 1918.
Life is like a movie, if you’ve sat through more than half of it and it’s sucked every second so far, it probably isn’t going to get great right at the end and make it all worthwhile. No one should blame you for walking out early.
And here’s a handy GIF about tonight’s the lunar eclipse. For the west coasters (who have a better chance of seeing the eclipse through the clouds) just subtract 3 hours. It’s basically a moving version of this NASA graphic.
Today the #kodamacrew trekked into the woods and found the lime kiln ruins. Built around 1860 and abandoned in 1920 it was the main lime stone source for the cement used to rebuild San Francisco after the great fire and earthquake in 1906. #urbex #urbanexploration #ruins #abandoned #modernruins