formation of urine pecularity ultrafiltration of blood .
Answers
Answer:
The high hydrostatic pressure forces small molecules such as water, glucose, amino acids, sodium chloride and urea through the filter, from the blood in the glomerular capsule across the basement membrane of the Bowman's capsule and into the nephron. This process is called ultrafiltration.
Answer:
Explanation:
Blood is filtered by a mesh called the basement membrane, which lies between the glomerulus and Bowman’s capsule
Glomerular blood vessels are fenestrated (have pores) which means blood can freely exit the glomerulus
The podocytes of the Bowman’s capsule have gaps between their pedicels, allowing for fluid to move freely into the nephron
Consequently, the basement membrane functions as the sole filtration barrier within the nephron
The basement membrane is size-selective and restricts the passage of blood cells and large proteins
Hence when the blood is filtered, the filtrate formed does not contain any blood cells, platelets or plasma proteins
basement membrane
Hydrostatic Pressure
Ultrafiltration involves blood being forced at high pressure against the basement membrane, optimising filtration
This high hydrostatic pressure is created in the glomerulus by having a wide afferent arteriole and a narrow efferent arteriole
This means it is easy for blood to enter the glomerulus, but difficult for it to exit – increasing pressure within the glomerulus
Additionally, the glomerulus forms extensive narrow branches, which increases the surface area available for filtration
The net pressure gradient within the glomerulus forces blood to move into the capsule space (forming filtrate)
MARK THE BRAINLIEST