how is the composition of blood returned to normal after drinking excessive quantities of water?
2007-05-10 16:14:35 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Biology
This is called osmoregulation and is an example of a negative feedback system controlled by the hypothalamus (in the brain). If too much water is detected then the hypothalamus sends signals to the pituitary gland. The pituitary gland stops producing ADH (anti diuretic hormone) more water is then removed from the blood in the kidneys and excreted (dilute urine). The blood water level then returns to normal. The opposite would occur if there was not enough water in the blood.
2007-05-12 00:35:43 · answer #1 · answered by kaz1insomniac 2 · 0⤊ 0⤋
When a human drinks more water, the blood becomes "diluted." One of the things our bodies monitor is how concentrated the blood is - called the osmolarity. When the osmolarity falls, it stimulates the release of hormones that effect how much water there is in urine. So, when the body has extra water, it produces much more, dilute urine.
2007-05-10 16:21:58 · answer #2 · answered by kt 7 · 0⤊ 0⤋
the kidneys are the organ in which the excess water gets filtered out of the blood.
2007-05-10 16:40:43 · answer #3 · answered by Luella 2 · 0⤊ 0⤋
drink breathe sweat pee according to cellular metabolism
2016-05-20 01:49:19 · answer #4 · answered by ? 3 · 0⤊ 0⤋