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Q.

Which ductless gland secretes hormones directly into blood circulation?

Asked by dare devil, 23 Feb '10 08:44 pm
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Answers (3)

 
1.

Function: The co-ordination of body organs, so as to operate as part of an integrated system.
The endocrine system is often compared with the nervous system, which also has the function of co- ordination and passing "instructions", but by an independent mechanism.

This is achieved by the production of HORMONES ("chemical messengers"):
- organic compounds
(i.e. fairly complex molecules, based on carbon - often proteins, peptides, steroids/sterols [lipids] )
- produced by various glands in different parts of the body - endocrine glands, also called ductless glands
(because they have no duct or tube to pipe their secretions to a release point)
- instead they are transported in the blood
- so they travel at the "speed of blood": slower than nervous impulses ...more
Answered by jameel ahmed, 23 Feb '10 10:25 pm

 
  
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2.

Endocrine SystemThese glands are ductless, which means that their secretions (hormones) are released directly !! endocrine system comprises a number of glands that produce hormones !!
Answered by Oberoi, 23 Feb '10 08:46 pm

 
  
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3.

The endocrine system
Answered by anupama kumar, 23 Feb '10 08:46 pm

 
  
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