Columns of Bertini allows the cortex to be better anchored.
Important Questions on Excretory Products and their Elimination
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.
The given part belong to which system?
(a) Kidneys (b) Ureters (c) Urinary bladder
Draw a neat labelled diagram of the system.
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)__
Identify in the below diagram of the excretory system of man.
Reason They are protruded into the body cavity from inner surface of dorsal body wall and have mesodermal peritoneum on their ventral side only
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
Which diagram do you draw to label these parts?
(i) Bowman’s Capsule (ii) Uriniferous tubule (iii) Collecting Tubule
Draw the diagram and label the parts.
