Which is the structural and functional unit of kidney?
Important Questions on Excretion
Study the following table
| S.No | Part of nephron | Lined by | Substances reabsorbed |
| I) | Proximal convoluted tubule | Simple squamous epithelium | Glucose, amino acids, water |
| II) | Descending limb of loop of Henle | Squamous epithelium (thin layer) | Water |
| III) | Ascending limb of loop of Henle | Squamous epithelium (lower thin and upper thick) | Water, electrolytes |
| IV) | Distal convoluted tubule | Cuboidal epithelium | Water, |
Among the above, Wrong combination are
Reason They are protruded into the body cavity from inner surface of dorsal body wall and have mesodermal peritoneum on their ventral side only
Consider the following three statements with blanks. Which of the options correctly fills all the blanks in these statements?
a) The ascending limb of loop of Henle's is impermeable to __(1)__ but allows transport of __(2)__
b) __(3)__ and __(4)__ play a significant role in producing a concentrated urine.
c) A fall in the glomerular blood flow/glomerular blood pressure / GFR gets active at the JG cells to release __(5)__
Correct and rewrite the statements by changing the biological term that is underlined in the statement:
The kidney is composed of number of neurons.Name the following:
The duct which transports urine from the kidney to the urinary bladder.
Study the following table.
| Part of Nephron | Location | Function | |
| A | Malpighian body | Cortex | Filtering blood |
| B | Proximal convoluted tubule | Cortex | Absorption of useful substances |
| C | Distal convoluted tubule | Medulla | Absorption of urea |
| D | Collecting duct | Only Cortex | Collection of urine |
Identify the correct combinations among the above.
