Question

Uriniferous tubules are mainly concerned with

• A. Concentration of urine
• B. Passage of urine
• C. Reabsorption of useful substances from glomerular filtrate
• D. Removal of urea from the blood

Answer 1

The correct option is D

Removal of urea from the blood

The correct option is D.

Explanation of the correct option:

1. Uriniferous tubules are a structural and functional unit of kidneys.
2. Uriniferous tubules are also known as kidney tubules.
3. Uriniferous tubules receive impure blood from the renal artery.
4. Uriniferous tubules excrete waste products in the form of urine.
5. Along with urine, uriniferous tubules remove urea from the blood.

Explanation of the incorrect options:

Option A:

Concentration of urine is done by the medulla which is the region of the kidney.

Option B:

Passage of urine occurs through ureters.

Option C:

Reabsorption of useful substances from glomerular filtrate is done by the proximal convoluted tubule.

Final answer: Uriniferous tubules are mainly concerned with the removal of urea from blood.