In mammalian kidneys, Bowman's capsules or Malpighian corpuscles occur in
Important Questions on Excretory Products and Their Elimination
Given below are statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Nephrons are of two types: Cortical and Juxta medullary, based on their relative position in cortex and medulla.
Reason R: Juxta medullary nephrons have short loop of Henle whereas, cortical nephrons have longer loop of Henle.
In the light of the above statements, choose the correct answer from the options given below:
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)__
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.
| ‘A’ | ‘B’ | ||
| Loop of Henle | 1. | Caries blood to the Glomerulus | |
| Afferent arteriole | 2. | Area Where a considerable amount of reabsorption takes place | |
| Proximal convoluted tubule | 3. | The main area of secretion | |
| Glomerulus | 4. | Tuft of capillaries | |
| Distal convoluted tubule | 5. | Plays a role in the concentration of urine | |
The correct pairing sequence of , and respectively are:
