Question

Cortical Nephrons have ______ nephron loops. Efferent arterioles branch into ________ _________ around the PCT and DCT?

1) No
2) One
3) Two
4) Three

Answer 1

Cortical Nephrons have No nephron loops. Efferent arterioles branch into around One Two Three the PCT and DCT.

Step-by-step explanation:

Cortical nephrons have only one nephron loop. The efferent arterioles branch into peritubular capillaries around the proximal convoluted tubule (PCT) and distal convoluted tubule (DCT).

Cortical nephrons, which make up the majority of nephrons in the kidney, have a single nephron loop. This loop extends into the medulla but doesn't reach the renal papilla. In contrast, juxtamedullary nephrons have a longer nephron loop that extends deep into the medulla. The branching of efferent arterioles into peritubular capillaries occurs around both the proximal convoluted tubule (PCT) and the distal convoluted tubule (DCT). These peritubular capillaries play a crucial role in reabsorption and secretion processes. They surround the tubules closely, allowing for the exchange of substances between the blood and the renal tubules.

In summary, cortical nephrons possess a single nephron loop, and the efferent arterioles branch into peritubular capillaries around both the proximal and distal convoluted tubules. This structural arrangement facilitates the intricate processes of filtration, reabsorption, and secretion that are vital for maintaining fluid and electrolyte balance in the body.