Homeostasis in Humans
Published by ..This maintenance of a constant internal environment is called homeostasis. Homeostasis ensures that the body cells are provided with a relatively constant environment so that they work efficiently and optimally, even though there might be changes outside the body..
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Homeostasis in Humans
Many aspects of our body’s internal environment e.g. body temperature, the concentration of glucose in the blood and tissue fluid, and the osmotic concentration and volume of the blood, are kept at almost constant levels. This maintenance of a constant internal environment is called homeostasis. Homeostasis ensures that the body cells are provided with a relatively constant environment so that they work efficiently and optimally, even though there might be changes outside the body.
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Negative feedback mechanisms are used to keep a fluctuating feature within narrow limits. In fact, any particular feature maintained by a negative feedback mechanism cannot be kept really constant. There is usually some fluctuation about a set point. This is caused by the time taken for the information to be transmitted to the effectors and for the actions of the effectors to take effect. The longer this time delay, the greater the fluctuations will be.
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Homeostatic Role of the Kidney
The kidney is a red-brown, bean-shaped organ about 10 cm long, 6 cm wide and 2.5 cm thick. The pair of kidneys is attached to the back of the abdominal cavity, to either side of the backbone, just behind the stomach and the liver. It receives oxygenated blood from the aorta through the renal artery, and deoxygenated blood is carried away in the renal vein to the inferior vena cava.
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On August 11, 2009 at 3:51 am
Very informative article. Great pictures also.
On August 11, 2009 at 4:16 am
Nice one, Mr Ghaz.
On August 11, 2009 at 4:17 am
This was really a great read here. Thanks for this comprehensive article and have my liked it.
On August 11, 2009 at 6:14 am
another educational and informative post,keep it up
On August 11, 2009 at 7:18 am
Very infomative article. Well done as always.
On August 11, 2009 at 7:21 am
An excellent article. I have learnt such a lot from it. Well done.
Christine
On August 11, 2009 at 8:17 am
well done!
On August 11, 2009 at 8:38 am
A very professional article and really informative.
Thank you,
Best wishes,
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On August 11, 2009 at 8:45 am
Very interesting and somewhat scary article.
Thanks for sharing.
Great pics too!
Best regards,
- Anders
On August 11, 2009 at 8:47 am
Whenever I read someone lament that they are bored, I wonder if they have any knowledge of what is happening beneath their skin.
I always enjoy your blogs on the human body, Mr. Ghaz.
On August 11, 2009 at 9:47 am
Very informative article. Thanks for sharing.
On August 11, 2009 at 1:04 pm
another great article. Very informative.
On August 11, 2009 at 1:38 pm
Excellent article, mrghaz. Interesting and educational.
On August 11, 2009 at 1:59 pm
Most informative!
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On August 11, 2009 at 3:05 pm
Excellent and teaching article.
On August 11, 2009 at 3:38 pm
great comprehensive article with great pictures
On August 11, 2009 at 6:10 pm
As always Mr Ghaz, a very well presented article that was informative,interesting and very well researched.Excellent work!!
lol I’m just happy they finally allowed me to comment in the sciencary so that I can comment on great work such as this!!
On August 12, 2009 at 12:27 am
Well done
On August 13, 2009 at 12:38 am
A very detailed research, informative, and well presented article. It takes a lot of effort and you have done it Mr. Ghaz.
Monica.
On August 15, 2009 at 3:41 pm
I am just speechless, this may have cost you few days to prepare. Thanks for such a nice article.
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