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Can water be reabsorbed from urine and become more concentrated?
Wiki User
∙ 13y ago
http://jeb.biologists.org/cgi/reprint/60/1/167.pdf yes, i think so.
Wiki User
∙ 14y ago
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How does urine differ from the original filtrate?
From the original filtrate, a lot of much needed electrolytes (Sodium e.t.c) are reabsorbed (absorbed back into blood), a few substances secreted further into the urine, then loads of water reabsorbed to fine tune body water to exactly how much you need(as much as possible), making urine far more concentrated than the original filtrate.
Does Antidiuretic hormone inhibits urine production and promote water reabsorption by the kidney?
NO. it increases the permeability of the cells lining the collecting duct via the insertion of Aquaporin 2. This increases the volume of water that is reabsorbed resulting in a concentrated urine. Urine is still produced but not a great amounts.
What happen to urine volume if you did not add ADH to the collecting duct?
I think the urine volume will significantly increase. The less water reabsorbed, the more urine will be formed.
Type of urine excreted when the water content of the body is low?
Concentrated, the more excess water is present in the body the more dilute the urine becomes.
How do you control the amount of water in your body?
The hypothalamus acts as the receptor for detecting whether water levels in the body are too high or too low by how concentrated or dilute the blood is.If the water level in the body is too low, i.e. the blood is concentrated:The pituitary gland secretes ADH (antidiuretic hormone)ADH signals the renal tubules in the kidneys to reabsorb more water.As a result the kidneys produce less urine, and that urine is more concentrated.The extra water being reabsorbed helps to dilute the blood.If the water level in the body is too high, i.e. the blood is dilute:The pituitary gland is not stimulated to release ADHWater reabsorption in the renal tubules is decreased.More urine is produced and that urine is dilute.Less water being reabsorbed helps to concentrate the blood a bit more.All that YOU to help this process is urinate when your body tells you it needs to, and drink more water (fluids) when your body tells you you're thirsty.
Why doesn't a kangaroo rat produce urine?
they do produce urine, but in small amount and more concentrated. they dont drink water and obtain water from their food such as grass, vegetables,insectes. they have extreme long Loop of Helen in their nuphrons in kidneys, this allows more water molecules can be reabsorbed, as the water moves back to the bloodstream, the concentrated and small amount of urine is formed
What would happen to your urine if you did not drink much water?
Become really concentrated
How does urine differ from the original filtrate?
From the original filtrate, a lot of much needed electrolytes (Sodium e.t.c) are reabsorbed (absorbed back into blood), a few substances secreted further into the urine, then loads of water reabsorbed to fine tune body water to exactly how much you need(as much as possible), making urine far more concentrated than the original filtrate.
Does Antidiuretic hormone inhibits urine production and promote water reabsorption by the kidney?
NO. it increases the permeability of the cells lining the collecting duct via the insertion of Aquaporin 2. This increases the volume of water that is reabsorbed resulting in a concentrated urine. Urine is still produced but not a great amounts.
Which hormones is most likely to cause production of a concentrated urine?
Antidiuretic hormone(ADH) reabsorbs water from the collecting tubules of the kidney causing urine to become concentrated.
What molecule is reabsorbed from the collecting duct so that urine becomes hypertonic?
water
Is water reabsorbed or excreted through the urine?
Water (e.g. a mixture of fluid) is excreted through the urine.Fluids are reabsorbed from the large intestines and then shuttled to the kidneys. The kidneys process fluids for excretion.
Does ADH favor the formation of dilute or concentrated urine?
ADH causes an increase in water reabsorption in the kidneys. Thus, by absorbing more water, the urine becomes MORE concentrated (more compounds in less water = more concentrated)
How do you clear concentrated urine?
By drinking fresh water.
What happen to urine volume if you did not add ADH to the collecting duct?
I think the urine volume will significantly increase. The less water reabsorbed, the more urine will be formed.
What is diabetes insipidus?
Diabetes insipidus is a disorder where urine cannot be concentrated as usual, because of a lack of anti-diuretic hormone (ADH). ADH is responsible for inserting water channels into the collecting duct (in the kidney), which allows water to be reabsorbed. This disorder results in dehydration, excessive thirst and excessive amounts of urine. It is unrelated to diabetes (diabetes mellitus) except that the symptoms are similar.
What substances make up the urine?
Urine consists of Urea, salts and other waste products that do not get reabsorbed into the blood capillaries. It also consists of water
