Question

Which type of nephron has a renal corpuscle that lies close to the corticomedullary junction with a long nephron loop that extends deep into the medulla?

1) Cortical nephron
2) Juxtamedullary nephron
3) Distal nephron
4) Proximal nephron

Answer 1

The juxtamedullary nephron is the type with a renal corpuscle close to the corticomedullary junction and a long loop of Henle extending into the medulla.

Step-by-step explanation:

The type of nephron that has a renal corpuscle lying close to the corticomedullary junction, with a long nephron loop extending deep into the medulla, is the juxtamedullary nephron. These nephrons are characterized by having long loops of Henle that extend significantly into the renal medulla, allowing them to concentrate urine more effectively than cortical nephrons. Only about 15 percent of all nephrons are juxtamedullary, but they play a critical role in the kidneys' ability to concentrate urine and help maintain water and electrolyte balance.

Cortical nephrons, on the other hand, make up the remaining 85 percent of nephrons and are primarily located within the renal cortex, featuring short loops of Henle that do not extend as far into the medulla.