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Fig.6) Cross-sectional histologic preparation showing (b)small connecting tubules with simple columnar epithelium and (a) large connecting tubules with simple cuboidal epithelium. Each distal convoluted tubule delivers its filtrate to a system of collecting ducts, the first segment of which is the connecting tubule. The collecting duct system ...
Each uriniferous tubule, along with the vasculature supplying it, is embedded in the interstitium. [ 13 ] Approximately 18–26 different cell types have been described in mammalian kidneys, with a large variation in the range due to a lack of consensus on what counts as a particular cell type, and likely to species differences. [ 100 ]
The collecting duct system of the kidney consists of a series of tubules and ducts that physically connect nephrons to a minor calyx or directly to the renal pelvis.The collecting duct participates in electrolyte and fluid balance through reabsorption and excretion, processes regulated by the hormones aldosterone and vasopressin (antidiuretic hormone).
Uriniferous tubules: any of the small tubules that are the excretory units of the vertebrate kidney; Uveoscleral pathway: a tubule that drains excess aqueous humor; Vasa efferentia: convoluted tubules that lead from the rete testis to the vas deferens and form the head of the epididymis [2]
Nephridia are homologous to nephrons or uriniferous tubules found in the kidney of humans. Nephridiopores are present in ventral region. Nephridiopores are present in ventral region. The nephridium consists of an opening called the nephrostome , a long convoluted tubule , and another opening called the nephridiopore.
Renal corpuscle showing glomerulus and glomerular capillaries Figure 2: (a) Diagram of the juxtaglomerular apparatus: it has specialized cells working as a unit which monitor the sodiujuxtaglomerular apparatus: it has three types of specm content of the fluid in the distal convoluted tubule (not labelled - it is the tubule on the left) and adjust the glomerular filtration rate and the rate of ...
Reabsorption is the transport of molecules from this ultrafiltrate and into the peritubular capillary network that surrounds the nephron tubules. [33] It is accomplished via selective receptors on the luminal cell membrane. Water is 55% reabsorbed in the proximal tubule. Glucose at normal plasma levels is completely reabsorbed in the proximal ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 13 November 2024. This article is about the human urinary system. For urinary systems of other vertebrates, see Urinary systems of birds, urinary systems of reptiles, and urinary systems of amphibians. Anatomical system consisting of the kidneys, ureters, urinary bladder, and the urethra Urinary system 1 ...