Dictionary » S » Sex hormone

Sex hormone

Definition

noun

A hormone that is secreted by gonads and is involved in the regulation of sexual functions, such as the regulation of reproductive cycle and development of accessory reproductive organs.


Supplement

Estrogen, testosterone, and gonadotrophins are examples of sex hormones. These hormones influence the secondary sex characteristics, e.g. body shape and contour, mammary development, and pitch of voice.


See also: sex steroid


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Re: mammary gland of male in mammals

... glands are not simply sweat glands that expand and develop more alveoli buds as the breast produces lactose when stimulated with prolactin--the hormone produced primarily during pregnancy and one that is necessary for milk production. Also because of testosterone, the male breast does not have ...

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by Annij
Sun Nov 03, 2013 4:47 am
 
Forum: Evolution
Topic: mammary gland of male in mammals
Replies: 18
Views: 18108

Re: Fats in the Late Night?

... to support the notion that eating in the late hours of the day accentuates the storage of fatty tissue . After eating, the pancreas releases a hormone called insulin . Insulin then signals muscle and fat cells to absorb glucose from food. Sleep deprivation can affect the metabolic functions ...

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by Coelacanth
Sun Oct 13, 2013 5:50 am
 
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Topic: Fats in the Late Night?
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cAMP 2nd Messenger Pathway and Experiments

... from cyc- cells were isolated and mixed with protein extracts from cells which exhibited adenylyl cyclase activity (cyc+ cells). Stimulating hormone, ATP, GTP, and Mg2+ were included in the mixture. The mixture was: cell membranes from cyc-, protein extracts from cyc+, and hormone, ATP, GTP, ...

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by mkay28
Tue Sep 24, 2013 10:43 pm
 
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Topic: cAMP 2nd Messenger Pathway and Experiments
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O level Past paper exam question on gland secretion

... 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, but it is also a protein. If it's a protein, then is it a small molecule? I can't interpret this question very well, can somebody help me please?

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by WilliamY
Sun Jun 16, 2013 9:10 am
 
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Topic: O level Past paper exam question on gland secretion
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Views: 1976

Re: How Genes/expression Determine Organism Shape

... results in birth defects. As to the other aspect of your question - genetic regulation of organism's size: Imagine this: Gene1 = produces growth hormone Gene 1 allele A (which is a variant of this gene) - can make 100 units of hormone per hour. Gene 1 allele B - can make only 50 units of hormone ...

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by Cat
Mon May 20, 2013 1:41 pm
 
Forum: Genetics
Topic: How Genes/expression Determine Organism Shape
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