Question

Which of the following factors is responsible for the formation of concentrated urine ?

A. Low levels of antidiuretic hormone

B. Maintaining hyperosmolarity towards inner medullary interstitium in the kidneys

C. Secretion of erythropoietin by juxtaglomerular complex

D. Hydrostatic pressure during glomerular filtration

Answer : Maintaining hyperosmolarity towards inner medullary interstitium in the kidneys

Releted Question 1

Uricotelic mode of passing out nitrogenous wastes is found in

A. Reptiles and Bird

B. Birds and Annelids

C. Amphibians and Reptiles

D. Insects and Amphibians

Releted Question 2

A. earthworm

B. cockroach

C. frog

D. man

Releted Question 3

A. uricotelic when plenty of water is available

B. uricotelic under conditons of water scarcity

C. ammonotelic when plenty of water is available

D. ureotelic when plenty of water is available

Releted Question 4

A. Mammals and birds

B. Fishes and fresh water protozoans

C. Birds, reptiles and insects

D. Frogs and toads