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Microvilli are the finger like projections present on the outer surface of the cell. Their function is to increase the surface area of the cells through which the diffusion of materials both into and out of the cell occur. They are also involved in absorption, secretion and cellular adhesion.
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The portion of the nephron closest to the renal corpuscle is the?
Proximal tubule
Tissue lining the proximal convoluted tubule?
The tissue lining the proximal convoluted tubule in the kidney is composed of a single layer of simple cuboidal epithelial cells with microvilli on their apical surface. These cells are responsible for reabsorbing substances such as glucose, amino acids, and ions from the filtrate back into the bloodstream. The microvilli increase the surface area available for absorption.
What structural modification of certain tubule cells enhances their ability to reabsorb substances from the filtrate?
I'm assuming that the filtrate refered to is that of Bowman's capsule in the kidney. If so then ... The cuboidal cells of the proximal convoluted tubule have long microvilli (brush border) on their apical (inside) surface that dramatically increase the surface area for reabsorption from the filtrate.
What is removed at the proximal convoluted tubule?
At the proximal convoluted tubule, reabsorption of water, glucose, amino acids, and ions (such as sodium, potassium, and chloride) from the filtrate back into the bloodstream occurs. Waste products and toxins are also secreted into the tubule for excretion in the urine.
In the kidneys the largest volume of water reabsorption occurs in the?
The largest volume of water reabsorption in the kidneys occurs in the proximal convoluted tubule. This is the first segment of the renal tubule where approximately 65-70% of the filtered water is reabsorbed back into the bloodstream.
What histological feature distinguishes proximal convoluted tubule from a distal convoluted tubule?
Proximal convoluted tubules have brush borders or microvilli on the inner edge of the tubule. Distal convoluted tubules do not have this structure.
Which parts of the renal tubule is formed by cuboidal epithelial cells bordered by dense microvilli?
Proximal Convoluted Tubule
Is it true that lumen surfaces of the tubule cells within the proximal convoluted tubule ae covered with microvilli?
yes, it's true
In which segment of the nephron would you find cuboidal cells with many microvilli and mitochondria?
The Proximal Convoluted Tubule
What is the last portion of the renal tubule?
the three main portions of the renal tubule are the proximal convoluted tubule, the loop of henle, and the distal convoluted tubule. the proximal convoluted tubule is the first portion. The proximal (convulated) tubule.
What is the primary site of tubular reabsorption in the kidneys?
The distal convoluted tubule or the collecting tube.
What are the subdivisons of the renal tubule?
Proximal convoluted tubule, Loop of henle and Distal convoluted tubule.
The portion of the nephron closest to the renal corpuscle is the?
Proximal tubule
Tissue lining the proximal convoluted tubule?
The tissue lining the proximal convoluted tubule in the kidney is composed of a single layer of simple cuboidal epithelial cells with microvilli on their apical surface. These cells are responsible for reabsorbing substances such as glucose, amino acids, and ions from the filtrate back into the bloodstream. The microvilli increase the surface area available for absorption.
What part of the nephron drains into the loop of henle?
The proximal convoluted tubule drains into the loop of Henle.
What are the parts of a nephron in order?
The parts of a nephron in order are the renal corpuscle (glomerulus and Bowman's capsule), proximal convoluted tubule, loop of Henle (descending and ascending limbs), distal convoluted tubule, and collecting duct.
What is the section of the renal tubule closest to the glomerular capsule?
The proximal convoluted tubule is closest to the glomerular capsule. The distal convoluted tubule is farther away.
