3. Describe how the following fluid volume regulating mechanisms would respond to shock: a. Antidiuretic Hormone Antidiuretic Hormone (ADH): ADH is made by the brain and helps the kidneys keep water in the
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An individual becomes dehydrated. Osmoreceptors in the hypothalamus respond to this increase in serum osmolarity by triggering the release of antidiuretic hormone (ADH) from the posterior lobe of the pituitary gland. ADH stimulates collecting tubules in the kidneys to increase their uptake of water, decreasing serum osmolarity. 1. The variable in this mechanism is: A. Collecting tubules in the kidneys B. Antidiuretic hormone C. The hypothalamus D. Serum osmolarity QUESTION 2 An individual becomes dehydrated. Osmoreceptors in the hypothalamus respond to this increase in serum osmolarity by triggering the release of antidiuretic hormone (ADH) from the posterior lobe of the pituitary gland. ADH stimulates collecting tubules in the kidneys to increase their uptake of water, decreasing serum osmolarity. 2. The stimulus in this mechanism is: A. The increased uptake of water by the kidneys B. The release of antidiuretic hormone C. An increase in serum osmolarity D. A decrease in serum osmolarity
Kaela P.
Sri K.
Body Fluid Homeostasis: Kidney Anatomy Negative feedback loops help regulate water loss & urine concentration: ADH (Antidiuretic hormone) regulates water levels in the body. When dehydrated, an increase in ADH signals the opening of channels within the collecting duct, allowing more water to be absorbed. If overhydrated, a decrease in ADH signals the closing of these same channels, allowing more water to leave the body. What messes with the release of ADH? Certain drugs, such as caffeine and alcohol, are common ones. Check-in: What is the sensor? Stimuli? Set point? Responses? In these feedback loops?
Shaiju T.
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