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Endocrine gland

Endocrine gland

organs or gland that secrete regulatory substances directly into the circulation and not through a duct.

Examples are pituitary, thyroid, parathyroid, adrenal glands, ovary and testis, placenta and beta cells of pancreas. Any of the glands of the endocrine system that secrete hormones directly into the bloodstream.Tissues specialised in the production of hormones which can be secreted into the bloodstream.


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Re: O level Past paper exam question on gland secretion

Hi WilliamY, I am no expert on the Endocrine system, this seems like a oddly worded question. The first thing I would think of though is relative molecule size, for example Insulin is gigantic when compared to the size of considerably small ...

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by Amphibitile
Sun Jun 23, 2013 12:37 am
 
Forum: General Discussion
Topic: O level Past paper exam question on gland secretion
Replies: 1
Views: 1773

O level Past paper exam question on gland secretion

... in this forum but I need a little help. UCLES 03 O level Bio. 5093/2 Dec. Q.5 Suggest an explanation for the fact that the chemicals produced by endocrine glands are usually in the form of small molecules. In fact, I don't even know what does it mean by small molecules. Insulin is a hormone, ...

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by WilliamY
Sun Jun 16, 2013 9:10 am
 
Forum: General Discussion
Topic: O level Past paper exam question on gland secretion
Replies: 1
Views: 1773

help match biology

... other. Connects right and left hemispheres Direct link to the pituitary gland of the endocrine system, plays a major role in homeostasis regulating HR, BR, temperature and drives ...

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by mkshawty
Wed Apr 25, 2012 11:30 pm
 
Forum: Human Biology
Topic: help match biology
Replies: 1
Views: 3260

Method preventing illnesses in the progeny

... viral, immune, allergic, nervous, mental, cardiovascular, oncology, endocrine, etc. disease. Attempt, undertaken in science for the purpose to ... at two monthly age had predisposition 100 % to a cancer of a mammary gland, lungs and the blood, enshrined in the offspring by inbreeding for ...

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by valentindolzhenko
Sun Jan 08, 2012 4:26 pm
 
Forum: Physiology
Topic: Method preventing illnesses in the progeny
Replies: 3
Views: 8314

More general biology questions..

... Endocrine system 2. In a positive feedback system, a hormone produced can act on the gland that produced it, which stimulates more creation. They gave an example of the contractions ...

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by freedompeace
Fri Apr 15, 2011 12:30 pm
 
Forum: Cell Biology
Topic: More general biology questions..
Replies: 1
Views: 5665
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