Which of the Following is Considered the First Segment of the Renal

Question

Which of the following is considered the first segment of the renal tubules?
A) glomerulus
B) proximal convoluted tubule
C) distal convoluted tubule
D) collecting duct

Accepted Answer

The proximal convoluted tubule is considered the first segment of the renal tubules, where filtrate from the glomerulus is processed and reabsorption of necessary substances, such as glucose and amino acids, occurs. The glomerulus is not a part of the renal tubules but rather the initial filtering component of the nephron. The distal convoluted tubule and collecting duct are subsequent segments of the renal tubules.