相关实验视频

Updated: Jun 9, 2025

Analysis of Nephron Composition and Function in the Adult Zebrafish Kidney
08:53

Analysis of Nephron Composition and Function in the Adult Zebrafish Kidney

Published on: August 9, 2014

44.4K

密度/直肠复合体:一种进化适应水和离子保护的适应

Robin Beaven1, Barry Denholm1

  • 1Hugh Robson Building, George Square, Deanery of Biomedical Sciences, The University of Edinburgh, Edinburgh, EH8 9XD, UK.

Biological reviews of the Cambridge Philosophical Society
|October 22, 2024
PubMed
概括

关节动物中的密码内综合体 (CNC) 是一个独特的肠系统,有效地保存水和溶液. 这篇评论探讨了它在陆地昆虫中的演变,功能和生态意义.

关键词:
科莱奥普特拉 (科莱奥普特拉) 是一种小鸟类.这就是Tenebrionidae.三宝石 (Tribolium castaneum) 是一种含有的物质.干旱的环境是一个干旱的环境.一个关节动物.昆虫 甲虫 甲虫 甲虫 甲虫 在反流动的反流动的情况.克里普托尼弗里迪亚姆 (Cryptonephridium) 是一种有机物.昆虫是一种昆虫.脏系统 脏系统

更多相关视频

Studying the Activity of Neuropeptides and Other Regulators of the Excretory System in the Adult Mosquito11:30

Studying the Activity of Neuropeptides and Other Regulators of the Excretory System in the Adult Mosquito

Published on: August 24, 2021

2.7K
Culturing Primary Rat Inner Medullary Collecting Duct Cells06:11

Culturing Primary Rat Inner Medullary Collecting Duct Cells

Published on: June 21, 2013

14.8K

相关概念视频

Physiology of the Genitourinary System II: Tubular Reabsorption and Secretion01:22

Physiology of the Genitourinary System II: Tubular Reabsorption and Secretion

The kidneys maintain homeostasis through filtration, reabsorption, and secretion. Tubular reabsorption and secretion are crucial in forming urine and regulating electrolytes, water balance, and waste elimination.Tubular Reabsorption and Secretion ProcessesTubular reabsorption is the process that reclaims essential substances such as electrolytes, glucose, amino acids, and water from the glomerular filtrate back into the bloodstream. This is achieved through passive and active transport...
1
Renal Tubule and Collecting Duct01:24

Renal Tubule and Collecting Duct

The renal tubule is divided into three parts: the proximal convoluted tubule (PCT), the Loop of Henle (LOH), and the distal convoluted tubule (DCT).
Proximal Convoluted Tubule (PCT):
The PCT is the initial segment of the renal tubule, extending from the Bowman's capsule that encloses the glomerulus. Its convoluted structure and microvilli-lined cells increase the surface area for reabsorption. The PCT reabsorbs glucose, amino acids, sodium, and water from the filtrate, ensuring essential...
834
Formation of Dilute Urine01:20

Formation of Dilute Urine

The formation of dilute urine is a critical renal adaptation that maintains fluid balance, particularly during periods of high fluid intake. This process primarily involves the juxtamedullary nephrons. By adjusting the permeability of water and ions in response to physiological conditions, the kidneys can either conserve or excrete water, resulting in concentrated or dilute urine.
Filtrate Osmolarity in the PCT
Initially, as the filtrate passes through the proximal convoluted tubule (PCT), its...
1.4K
Physiology of the Genitourinary System III: Urine Concentration and Dilution01:20

Physiology of the Genitourinary System III: Urine Concentration and Dilution

The kidneys concentrate or dilute urine to maintain water and electrolyte balance. Nephrons, particularly the loop of Henle, play a crucial role in this process through the countercurrent multiplication system. This system establishes a high osmolarity in the renal medulla, which is essential for water reabsorption. In the loop of Henle’s descending limb, water is reabsorbed into the surrounding medulla due to its permeability to water. In contrast, the ascending limb actively transports...
1
Reabsorption and Secretion in the DCT and Collecting Duct01:26

Reabsorption and Secretion in the DCT and Collecting Duct

The early phase of the DCT manages the reabsorption of approximately 10-15% of filtered water, 5–10% of filtered sodium, and 5–10% of filtered chloride. This process is facilitated by Na+–Cl− symporters in apical membranes and sodium-potassium pumps, as well as Cl− leakage channels in basolateral membranes. The early DCT also stands out as a site where parathyroid hormone (PTH) stimulates calcium reabsorption, depending on the body's requirements.
The distal...
930
Formation of Concentrated Urine01:23

Formation of Concentrated Urine

There is a gradient of solutes in the interstitial fluid from the renal cortex through the medulla, known as the medullary osmotic gradient. The juxtamedullary nephrons establish and maintain this gradient using countercurrent mechanisms with loops extending deep into the medulla. These nephrons also use countercurrent mechanisms to regulate urine volume and concentration. The interaction between the descending and ascending limbs of the nephron loop creates an osmotic gradient through...
1.6K