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What else can I help you with?
Why is ADH secreted?
ADH, or antidiuretic hormone, is secreted by the pituitary gland in response to changes in blood osmolality or volume. Its main role is to regulate the amount of water reabsorbed by the kidneys, helping to maintain fluid balance and prevent dehydration.
Why does alcohol act as a diutertic?
Alcohol inhibits the release of antidiuretic hormone (ADH) from the pituitary gland, which normally helps the kidneys reabsorb water. Without ADH, the kidneys do not reabsorb as much water, leading to increased urine production and dehydration, making alcohol a diuretic.
How does the body detect changes in blood osmolarity and how the body responds to restore a state of water balance?
The body detects changes in blood osmolarity through osmoreceptors in the hypothalamus. If blood osmolarity increases, the hypothalamus signals the release of antidiuretic hormone (ADH), which acts on the kidneys to reabsorb more water and concentrate urine. Conversely, if blood osmolarity decreases, ADH release is inhibited, leading to more urine production and dilution of the blood.
What biological mechanism senses a drop in the osmolarity of the blood when you are deyhydrated?
Among other things, the Kidneys regulate blood fluid levels and electrolyte balance. If one is dehydrated, the kidneys reabsorb more sodium via the "thousands" of nephrons that make up the body of the kidney. As a physiological rule, fluids follow a concentration gradient, so, in this case, water follows sodium and the body will retain more water. Here is a great link on kidney function: http://kidney.niddk.nih.gov/Kudiseases/pubs/yourkidneys/
The hormones stored in the posterior pituitary are released only when triggered by the what?
The hormones stored in the posterior pituitary gland, such as oxytocin and vasopressin, are released in response to nerve signals from the hypothalamus. These hormones are only released when specific stimuli trigger their release, such as childbirth or changes in blood osmolarity.
Does ADH release posterior pituitary?
Yes, antidiuretic hormone (ADH) is released from the posterior pituitary gland. It is responsible for regulating the body's water balance by acting on the kidneys to retain water and reduce urine production.
Why does one feel thirstier after she or he drink soft-drinks?
Being thirsty is a brain response due to increased blood osmolarity or decreased blood volume. The human body must keep its blood osmolarity close to 300 mOsms in order to function properly. If it is increased or the blood volume is decreased the brain will release hormones such as ADH(antidiuretic hormone- to save water) and will trigger a thirst response in the brain. Soft-drinks as opposed to water, have an increased osmolarity and therefore cannot lower your blood osmolarity to the same degree as water and therefore do not relieve your thirst. Hope that helps
What tells the kidneys how much water to absorb?
Antidiuretic hormone ADH
What causes ADH to release?
the water content in the body......... because there isn't much water the body needs to conserve some (almost everything in the body needs water) and that is what the adh (anti-diuretic hormone) does
What is pituitary-adrenal stimulation?
Also known as the hypothalamic-pituitary-adrenal axis, this is by which adrenal stimulation of cortisol production (by pituitary ACTH release).
How does hypothalamus control the pituitary?
The hypothalamus controls the pituitary gland through the release of hypothalamic-releasing hormones and inhibiting hormones. These hormones travel through a network of blood vessels to the pituitary gland and stimulate or inhibit the release of various hormones from the pituitary. This way, the hypothalamus regulates the endocrine functions of the pituitary gland.
What gland stimulates the pituitary function?
The hypothalamus is the gland that stimulates the pituitary gland to release hormones. It does this by secreting releasing and inhibitory hormones that control the pituitary's hormone production.
