Question

In which part of the excretory system of mammals
you can first use the term urine for fluid it
contains?
(a) Bowman’s capsule
(b) Loop of Henle
(c) Collecting tubule
(d) Urinary tubule

Answer 1

Answer:

(C) Collecting tubule

Explanation:

Distal convoluted tubules from many nephrons all connect to a common tube, the collecting duct, which empties into the renal pelvis. The collecting duct system begins in the renal cortex and extends deep into the medulla. As the urine travels down the collecting duct system, it passes by the medullary interstitium, which has a high sodium concentration.

So, the correct answer is option C.

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Answer 2

Answer:

The answer is (A) Bowman’s capsule.

Explanation:

We cannot call the filtrate in Bowman's capsuleas urine. It is called glomerular filtrate. The nephron and the collecting duct are lined by a transport epithelium that processes the filtrate, forming the urine. The fluid out of the collecting duct is called urine.