Advertisements
Advertisements
प्रश्न
Answer the following in detail.
Describe the process of urine formation.
Advertisements
उत्तर
The process of urine formation takes place in the following steps:
- Glomerular Alteration: Blood containing waste material enters the kidneys through the renal artery. It then enters the glomerulus under high pressure. Water and small solutes are filtered in the Bowman’s capsule.
- Tubular reabsorption: Filterate passes through the thin walls of the Bowman’s capsule into the urinary or renal tubule. As it passes through the tubule, water, and many useful substances are reabsorbed by the renal blood capillaries.
- Tubular secretion: The remaining liquid, along with wastes such as urea, uric acid, etc., is called urine and is collected in the urinary bladder.
- Excretion: Urine leaves the kidneys and passes into the urinary bladder through the ureters. When the urinary bladder is full, urine is passed out through the urethra.
APPEARS IN
संबंधित प्रश्न
Bile, Urea, Uric acid, Ammonia
The given diagram represents a nephron and its blood supply. Study the diagram and answer the following questions:
(i) Label parts 1, 2, 3 and 4.
(ii) State the reason for the high hydrostatic pressure in the glomerulus.
(iii) Name the blood vessel which contains the least amount of urea in this diagram.
(iv) Name the two main stages of urine formation.
(v) Name the part of the nephron which lies in the renal medulla.
Write the functions of Kidney
Differentiate between
tannins and resins
If you donate one kidney to a needy patient, would it cause any harm to you? Give reason.
Differentiate between the following pairs of term :
Renal pelvis and renal papilla
Explain the functioning of kidney.
Complete the following sentence with appropriate word:
The U-shaped portion of a nephron located in the medulla region is called ______.
Choose the correct option.
Which one of the following organisms excrete waste through nephridia?
Explain the importance of soil for plant growth.
