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Hormones
Hormones are biochemicals produced by the glands in a body. Hormones help to regulate the body's functions. They control hunger, mood, sleep, growth, and a number of other functions.
2,196 Questions
What is the purpose of aldosterone?
The major target of aldosterone is the distal tubule of the kidney, where it stimulates exchange of sodium and potassium. Three primary physiologic effects of aldosterone result:
- Increased resorption of sodium: sodium loss in urine is decreased under aldosterone stimulation.
- Increased resorption of water, with consequent expansion of extracellular fluid volume. This is an osmotic effect directly related to increased resorption of sodium.
- Increased renal excretion of potassium.
Knowing these effects should quickly suggest the cellular mechanism of action this hormone. Aldosterone stimulates transcription of the gene encoding the sodium-potassium ATPase, leading to increased numbers of "sodium pumps" in the basolateral membranes of tubular epithelial cells. Aldosterone also stimulates expression of a sodium channel which facilitates uptake of sodium from the tubular lumen.
Is growth hormone a tropic hormone?
Tropic hormones are responsible for telling the body to secrete other hormones. They accomplish this by targeting endocrine glands. Most tropic hormones are secreted by the anterior pituitary.
It thickens the endomatrium.It maintains the preganancy.It inhibits emmitting of ova.
What is an adrenocortical hormone?
there are many, for example, epinephrine, norepinephrine, cortisol, cortisosterone, deoxycorticosterone, aldosterone, DHEA and andosternione.
What is thyroid hormones synthesized from?
Thyroid release the hormone thyroxine. This gland is stimulated by Thyroid stimulating hormone (TSH) which is secreated from anterior pitutary gland situated in hypothalamus of brain.
Does glucagon have an effect on the liver?
yes it has it also has side effects and can be qiet amusing the contram gets to the liver and nuetreleises thewcatasrphic cells
Where in the female body is oestrogen and progesterone produced?
They are made in the ovaries. They are responsible for female sexual development and maintenance mainly.
Leptin is a hormone that comes from adipose cells (cells that make up the fat in your body). Leptin suppresses your appetite and regulates your body's energy expenditure. Since Leptin is produced by fat cells, if you have too much it means that you have excess fat (i.e. you are overweight!)
Who is the inventor of insulin?
The insulin was first isolated in 1916 by the Romanian scientist Nicolae Paulescu.
Four years later, two Canadian scientists Banting and Macleod won the Nobel prize for inventing insulin.
After that there were many disputes about the fact that Banting was inspired from Nicolae's work. The two Canadians took the credit for his work and only after 50 years from Nicolae's discovery, when everybody already thought it was a Canadian invention, it was proved and confirmed that Nicolae, the Romanian scientist, was the true inventor of insulin.
Hormone responsible for ovulation?
However, the anterior pituitary gland will secrete larger quantities of LH (lutenizing hormone). This is actually the hormone that initiates ovulation. Then the rest of the hormones come into play.
Where in the body does the production of calcitriol start?
It is synthesized in the skin not the kidneys as some would think
Role of cholecystokinin in digestion?
It is a hormone which controls the quantity of pancreatic juice and bile in small intestine. It causes the release of digestive juices into the intestine by controlling sphincter of oddi (valve between ampulla of vater and small intestine). Ampulla of vater is formed by the union of common bile duct and pancreatic duct.
How does the test for prolactin work?
Prolactin hormone is the hormone responsible for lactation or milk production.
What are the subunits of insulin?
Insulin comes in various concentrations. 40U insulin means that there are 40U (or "units") of insulin in 1ml while 100U insulin means that there are 100 units of insulin in 1ml.
It should also be noted that insulin syringes come calibrated to the type of insulin they are to be used with, so you should never use a 40U syringe with 100U insulin, for example, without consulting your doctor for the correct dose with the mismatched syringe.
Will progesterone stop me from spotting bleeding?
Do not take progesterone without medical guidance... it affects how you hold a baby and lung function.
What foods make the body more sensitive to leptin?
Fish, pulses, and vegetables contain leptin, but here is more information:
First of all, the digestive tract cannot absorb leptin, so even if you could find a food rich in leptin it wouldn't help - forget about finding foods rich in leptin. The body has to create it's own leptin.
Second, you don't actually want high leptin levels in your blood - what you want is for your body to respond to leptin more efficiently (ultimately resulting in LOWER leptin levels!).
Leptin acts to curb appetite and to increase metabolism. So it would seem that you would want to increase leptin levels. But over time, high leptin levels in your blood eventually results in leptin insensitvity - similar to diabetes. Also, genetics makes some people less responsive to leptin than others.
The real key is to make your body more sensitive to leptin - so that you will maintain a high metabolic rate and low appetite even if leptin levels drop. And as you lose weight, leptin levels drop, because fat itself causes the body to produce more leptin.
So your question should be "what foods make the body more sensitive to leptin?"
And the answer is that there are indeed some foods that apparently help the body become more efficient at processing leptin. How this works is not yet known - it is still being studied. But we do know that foods that seem to help include: Fish, primarily, then pulses (kidney beans, pinto beans, navy beans, lima beans, lentils), then other vegetables.
Studies have shown that people with high levels of fish in their diet have low leptin levels (their bodies respond to leptin more efficiently, so the body doesn't produce as much leptin). In populations that don't eat lots of fish, leptin levels are usually higher, even when caloric intake, body fat levels, and weight are similar to those who eat lots of fish. After fish, high intake of pulses appears to be effective at decreasing leptin levels (again, increasing leptin sensitivity). After pulses, generally a diet rich in vegetables appears to aid in increasing leptin sensitvity.
So there's your answer: fish, pulses, and vegetables. Nothing new, really...
First of all, the digestive tract cannot absorb leptin, so even if you could find a food rich in leptin it wouldn't help - forget about finding foods rich in leptin. The body has to create it's own leptin.
Second, you don't actually want high leptin levels in your blood - what you want is for your body to respond to leptin more efficiently (ultimately resulting in LOWER leptin levels!).
Leptin acts to curb appetite and to increase metabolism. So it would seem that you would want to increase leptin levels. But over time, high leptin levels in your blood eventually results in leptin insensitvity - similar to diabetes. Also, genetics makes some people less responsive to leptin than others.
The real key is to make your body more sensitive to leptin - so that you will maintain a high metabolic rate and low appetite even if leptin levels drop. And as you lose weight, leptin levels drop, because fat itself causes the body to produce more leptin.
So your question should be "what foods make the body more sensitive to leptin?"
And the answer is that there are indeed some foods that apparently help the body become more efficient at processing leptin. How this works is not yet known - it is still being studied. But we do know that foods that seem to help include: Fish, primarily, then pulses (kidney beans, pinto beans, navy beans, lima beans, lentils), then other vegetables.
Studies have shown that people with high levels of fish in their diet have low leptin levels (their bodies respond to leptin more efficiently, so the body doesn't produce as much leptin). In populations that don't eat lots of fish, leptin levels are usually higher, even when caloric intake, body fat levels, and weight are similar to those who eat lots of fish. After fish, high intake of pulses appears to be effective at decreasing leptin levels (again, increasing leptin sensitivity). After pulses, generally a diet rich in vegetables appears to aid in increasing leptin sensitvity.
So there's your answer: fish, pulses, and vegetables. Nothing new, really...
When the kidneys are stimulated to produce renin?
When arterial blood pressure drops and/or when the NaCl level of the filtrate is low.
What hormone regulates the release of cortisol?
the adrenal cortex, a gland above each kidney, releases cortisol. The hormone ACTH , which is released from the anterior pituitary gland in the brain, stimulates the relase of cortisol from the cortex as a result of stress in normal conditions.
What hormones inhibits secretion of follicle stimulating hormone by the anterior pituitary?
inhibin and estrogen in females, inhibin and testosterone in males
How does the permissive hormones thyroid hormone and epinephrine work together?
Wikipedia: "In biology, permissiveness is a certain relationship between hormones and the target cell. It can be applied to describe situations in which the presence of one hormone, at a certain concentration, is required in order to allow a second hormone to fully affect the target cell. For example, thyroid hormone increases the number of receptors available for epinephrine at the latter's target cell, thereby increasing epinephrine's effect at that cell. Without the thyroid hormone, epinephrine would have only a weak effect"
