When the hypothalamus detects the change caused by exercise, an increase in the production of ADH occurs. Using your knowledge of hormones, describe how ADH is transported to the kidneys, and how it stimulates cells of the kidney tubules.
Question
When the hypothalamus detects the change caused by exercise, an increase in the production of ADH occurs. Using your knowledge of hormones, describe how ADH is transported to the kidneys, and how it stimulates cells of the kidney tubules.
Solution
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The hypothalamus, upon detecting a change such as dehydration caused by exercise, stimulates the pituitary gland to produce and release Antidiuretic Hormone (ADH).
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ADH is then released into the bloodstream. The bloodstream serves as the transportation system for ADH to reach the kidneys.
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Once ADH reaches the kidneys, it binds to receptors on cells in the collecting ducts of the kidney tubules.
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This binding triggers a signal transduction pathway within these cells, leading to the insertion of water channel proteins, called aquaporins, into the cell membrane.
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The aquaporins increase the permeability of the cell membrane to water, allowing water to be reabsorbed from the urine back into the bloodstream.
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This process concentrates the urine and reduces its volume, helping to conserve water in the body. This is particularly important during exercise, when the body is losing water through sweat.
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The increased water reabsorption also helps to maintain blood pressure and prevent dehydration.
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Once the body is rehydrated and the hypothalamus no longer detects a need for increased water conservation, it will signal the pituitary gland to reduce the production of ADH. This will decrease the water permeability of the kidney tubules, returning the urine to its normal concentration and volume.
Similar Questions
ADH is produced by the pituitary gland in the brain. But it has specific effects on the kidneys.Explain how ADH travels to the kidneys and how it's able to only target specific cells.
An increase of ADH causes the kidneys to ________ the reabsorption of water, causing them to produce _______ urine.Multiple Choiceincrease; moreincrease; lessdecrease; lessdecrease; more
The pituitary releases a hormone called ADH when the hypothalamus senses that ion concentration is high in the blood. This often occurs when someone has not had enough water to drink. What is the target organ for the ADH?
To avoid dehydration or overhydration, proper water balance must be maintained in the body. One way that the water concentration of the body is monitored is by osmoreceptors in the hypothalamus which detect the concentrations of ions in the extracellular fluid. When a change in the concentration of ions in the blood is detected, such as during exercise, the body must respond. To do so, the hypothalamus produces antidiuretic hormone (ADH), also known as vasopressin. ADH is then transported to and released from the pituitary gland, where it travels to several areas of the body including the kidneys. ADH functions to stimulate the insertion of ‘water channels’ called aquaporins into the membranes of the kidney tubules, allowing for greater water reabsorption.If a person were to experience over hydration, what would happen to the levels of ADH secreted from the pituitary gland and the permeability of water in the kidney tubule?
Which of these is the major physiological effects of Antidiuretic hormone (ADH)?Question 7Select one:a.Regulates mood, sexual development, and daily cycles in response to the amount of light in the environment.b.Involved in T-cell developmentT-cell developmentc.Promotes water re-absorption in kidney tubules.d.Increases metabolic rate.e.Promotes growth of all body tissues.f.Stimulates the development of sexual organs and secondary sexual characteristics in males.
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