Explain excretion in human beings in …
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Posted by Abhishek Varma 5 years, 5 months ago
- 3 answers
Yogita Ingle 5 years, 5 months ago
- A pair of kidneys, a pair of ureters, a urinary bladder and a urethra constitutes the human excretory system.
- Kidneys are present on either side of the backbone in the abdomen.
- Kidneys produce urine and urine from kidney passes through the ureters into the urinary bladder and remains stored their until it is released through the urethra.
- Urine is produced to filter out waste products from the blood.
- Nephrons are basic structural and functional unit of kidney.
- Cluster of thin walled blood capillaries called glomerulus in the nephron filtrate the urine and each cluster is associated with cup shaped end of a tube called Bowman’s capsule.
- Substances like glucose, amino acids, salts and a major amount of water is selectively reabsorbed from the initial filtrate as the urine flows along the tube.
- Reabsorption depends on the amount of excess water in the body and dissolved waste to be excreted.
- The urine from kidney enters the long tube called ureter.
- Ureter connects the kidney with the urinary bladder and urine from the kidney is passed to urinary bladder and stored in the bladder.
- When the pressure in the expanded bladder leads to the urge to urinate, the urine is passed out through urethra.
Tanish Chawla 5 years, 5 months ago
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Tamanna Soni 5 years, 5 months ago
1Thank You