hormone miracle...

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bass_lasso9
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hormone miracle...

Post by bass_lasso9 » Sun Oct 30, 2005 1:36 pm

hi all...
how can hormone control our body's glands activities...?
hormone -as we know- is just a liquid, right...?
how can it do that...?
thank's a lot for your time and answers before... :wink: :D

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Poison
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Post by Poison » Sun Oct 30, 2005 4:11 pm

you are composed of cells and therefore atoms. How can you be alive? It is a such kind of question. Enzymes are miracle too. :) What do you want to know about hormones.
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MrMistery
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Post by MrMistery » Sun Oct 30, 2005 4:17 pm

A hormone is not just a liquit, it is a very specifically designed protein or lipid molecule. Although the biochemical processes of hormone regulation are extremely complex, think of it like this: each endocrin gland cell has receptors for the hormones it produces. When their number reaches a certain limit, they trigger a cellular mechanism that lowers the quantity of hormones produced. Usually cAMP or cGMP are used.. Is this what you were asking?
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hurly
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Post by hurly » Sun Oct 30, 2005 4:24 pm

Ehm, where does it say that hormones are liquid? Hormones are aminoacids in the form of f.ex. protein

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MrMistery
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Post by MrMistery » Sun Oct 30, 2005 4:26 pm

I don't know if they are liquid but they are inside the blood at all time, and that is deffinetly liquid :)
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Fried Zygote Sandwich
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Post by Fried Zygote Sandwich » Sun Oct 30, 2005 6:29 pm

A dissolved substance perhaps?

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Post by MrMistery » Sun Oct 30, 2005 6:49 pm

Not necessarily a dissolved substance because there are some steroid hormones that are not water soluble. So this definition wouldn't go for all hormones
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Dr.Stein
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Post by Dr.Stein » Sat Nov 12, 2005 12:11 pm

Well, simply it is said that hormone is a chemical substance, could be composed of amino acids or cholesterol (steroid).

Hormones should be able to dissolve in body fluid. Protein hormones will easily dissolved into water-based body fluid, but steroid hormones need a protein carrier, usually globulin, to bring them along circulation to their target cells (cells that have receptors for a hormone).

How hormones take action? It depends on what hormone it is. For example, a hormone will work on DNA of its target cells to synthesize specific mRNA, then will produce new proteins.
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