The Kidneys And nephrons Kidneys: Gross Anatomy • Renal Capsule: The outer protective covering of the kidneys. • Renal Cortex: Where major portion of nephrons lie. • Renal Medulla: Parts of the nephron’s loops of henle delve into this region. Also where the collecting ducts extend into. • Renal Pelvis: Where the urine pools together from the collecting ducts and drains into the ureters. Nephrons • Renal corpusle consists of a: – Glomerulus: a ball of leaky capilliaries that sits inside the Bowman’s capsule. – Bowman’s capsule: A capsule that surrounds the glomerulus and catches the filtrate that comes through and funnels it off to the tubes of the nephron. • the Renal Tubule consists of the: – Proximal convoluted tubule: Reclaims glucose, amino acids, vitamins and minerals. – Loop of henle: reclaims most of the water and pumps out salt to produce an osmotic gradient. – Distal convoluted tubule: secretes and absorbs salts and minerals back into the urine to adjust the salt water balance. It’s function is affected by hormones. • Collecting ducts: pass the urine down to the calyxes, into the renal pelvis that lead to the ureters and the bladder.
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