Advertisements
Advertisements
प्रश्न
We can produce a concentrated/ dilute urine. This is facilitated by a special mechanism. Identify the mechanism.
पर्याय
Reabsorption from PCT
Reabsorption from Collecting Duct
Reabsorption/Secretion in DCT
Counter current mechanism in Henle’s loop/Vasa recta
Advertisements
उत्तर
Counter current mechanism in Henle’s loop/Vasa recta
Explanation:
Counter current mechanism operates between the two limbs of the loop of Henle and those of vasa recta. The filtrate becomes concentrated when it moves down the descending limb but is diluted by the ascending limb.
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
Urine contains .................... and ................. as nitrogenous waste.
Choose the correct answer:
Vitamin excreted through urine in mammals is ______________
Name the following:
Animals which excrete ammonia.
The given diagram represents a nephron and its blood supply. Study the diagram and answer the following question :
Name the two main stages of urine formation.
Think of the following: Tears, sweat, saliva, milk, Insulin, urine.
What are these excretion or secretion ? Why ?
What is osmoregulation?
Differentiate between:
Excretion and Secretion.
Sketch and label the structure of malphigian body.
Explain the Term: The Bowman’s capsule
Give Technical Terms:
The pigments produced by the breakdown of haemoglobin in liver.
Complete the following sentence with appropriate word:
The human liver converts ammonia into ______
State the Location: Urinary bladder
Choose the Odd One Out:
Choose the correct option.
Urea is a product of breakdown of ______.
Arrange the excretory system in the correct sequence.
(Urinary bladder, Ureter, Kidney, Urethra).
Thin muscular tubes carry urine from the kidney to the urinary bladder.
Match Column I with Column II.
| Column I | Column II |
| A. PCT | (i) Concentrated urine formation |
| B. DCT | (ii) Filtration of blood |
| C. Loop of Henle | (iii) Reabsorption of 70-80% of the electrolyte |
| D. Counter current mechanism | (iv) Ionic balance |
| E. Renal corpuscle | (v) Maintenance of concentration gradient in medulla |
Select the correct option from the codes given below.
Which blood vessel has largest amount of urea?
The inner visceral layer of glomerular capsule composed of specialised cells called ______.
Explain the role of kidney in hormone secretion.
