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The distal convoluted tubule (DCT) is the tortuous, final segment of the renal tubule of the nephron, situated between the nephron loop (of Henle) and the connecting tubules. It is located within the cortex of the kidney, and is a direct continuation of the distal straight tubule (a.k.a. thick ascending limb of nephron loop).
The straight distal tubule (thick ascending limb) continues on from the thin ascending limb of the nephron loop at the level between the inner and outer medulla. The convoluted distal tubule projects into the cortex. Both parts of the distal tubule are composed of simple cuboidal epithelium, similar in morphology to the proximal tubule.
The distal convoluted tubule (DCT) and collecting duct (CD) are the final two segments of the nephron. They have an important role in the absorption of many ions and in water reabsorption. The distal convoluted tubule can be subdivided into early and late sections, each with its own functions.
The distal convoluted tubule (DCT) is a portion of kidney nephron between the loop of Henle and the collecting tubule. Physiology. It is partly responsible for the regulation of potassium, sodium, calcium, and pH.
Describe the histology of the proximal convoluted tubule, nephron loop, distal convoluted tubule, and collecting duct. The renal structures that conduct the essential work of the kidney cannot be seen by the naked eye. Only a light or electron microscope can reveal these structures.
The distal tubule of the mammalian kidney can be defined as the nephron segment between the macula densa region and the cortical collecting tubule. It comprises several morphologically and functionally heterogeneous subsegments, reabsorbs 5–10% of the filtered sodium and chloride under normal conditions, and participates importantly in net K ...
The distal convoluted tubule is the nephron segment that lies immediately downstream of the macula densa. Although short in length, the distal convoluted tubule plays a critical role in sodium, potassium, and divalent cation homeostasis.
The distal convoluted tubule is considered the final segment of the renal tubule. Measuring approximately 30–50 µm in diameter, the distal convoluted tubule is characterized by a lower height cuboidal epithelium, no brush border of microvilli, and a generally wider lumen (Kerr, 2007).
The distal convoluted tubule (DCT) is a short nephron segment, interposed between the macula densa and collecting duct. Even though it is short, it plays a key role in regulating extracellular fluid volume and electrolyte homeostasis.
Distal Convoluted Tubule (DCT) The DCT, like the PCT, is very tortuous and formed by simple cuboidal epithelium, but it is shorter than the PCT. These cells are not as active as those in the PCT; thus, there are fewer microvilli on the apical surface.