|Medical School Bilological Class,medical Promotion Gift
|Neutral Bleached Paper Carton,safe Export Packaging And Short Delivery Time
human muscle anatomy 3d model,
brain anatomy 3d model
Enlarged Kidney Model 1 Part Human Organ Model Medical Human Kidney Model
|Enlarged Kidney Model 1 Part
|For school,laboratory and teacher
9pcs/carton, 58x37x29cm, 10kgs
|This model shows 3 times enlarged of the kidney, with adrenalglands, 2 components, showing the renal cortex, renal medulla,proximal convoluted tubule, distal convoluted tubule, medullaryloop, collecting duct, and papillary duct, calyces renales minors, calyces renales majors , renal pelvis, ureter, interlobular artery,vein, renal artery, vein and renicapsule.
About the kidney knowledge
The kidneys excrete a variety of waste products produced by metabolism into the urine. The microscopic structural and functional unit of the kidney is the nephron. It processes the blood supplied to it via filtration, reabsorption, secretion and excretion; the consequence of those processes is the production of urine. These include the nitrogenous wastes urea, from protein catabolism, and uric acid, from nucleic acid metabolism. The ability of mammals and some birds to concentrate wastes into a volume of urine much smaller than the volume of blood from which the wastes were extracted is dependent on an elaborate countercurrent multiplication mechanism. This requires several independent nephron characteristics to operate: a tight hairpin configuration of the tubules, water and ion permeability in the descending limb of the loop, water impermeability in the ascending loop, and active ion transport out of most of the ascending limb. In addition, passive countercurrent exchange by the vessels carrying the blood supply to the nephron is essential for enabling this function.
The kidney participates in whole-body homeostasis, regulating acid-base balance, electrolyte concentrations, extracellular fluid volume, and blood pressure. The kidney accomplishes these homeostatic functions both independently and in concert with other organs, particularly those of the endocrine system. Various endocrine hormones coordinate these endocrine functions; these include renin, angiotensin II, aldosterone, antidiuretic hormone, and atrial natriuretic peptide, among others.