After losing blood due to a serious cut, Jaimee experienced what kind of thirst? How would her body respond to the loss of blood?

Question

What will be an ideal response?

Answer 1

Jaimee experienced hypovolemic thirst that resulted when she experienced a drop in the volume of her blood. Lower blood volume is sensed by receptors in the heart and kidneys. The wall of the heart muscle contains baroreceptors that measure blood pressure. As blood volume decreases, blood pressure decreases as well. The kidneys contain blood-flow receptors that also respond to changes in blood volume. When low blood volume is perceived, thirst is initiated, and the kidneys act to conserve remaining fluids. Baroreceptors stimulate release of ADH, also known as vasopressin, by the posterior pituitary gland located just below the hypothalamus. First, ADH signals the kidneys to reduce urine production, which conserves fluid. Second, ADH stimulates the kidneys to release the hormone renin into the blood supply. Renin is also released in response to activity in the kidneys' blood-flow receptors. Once in the bloodstream, renin triggers the conversion of angiotensinogen, a blood protein, into angiotensin II. Angiotensin II constricts blood vessels, helping to maintain blood pressure. Angiotensin II also triggers the release of the hormone aldosterone from the adrenal glands, located above the kidneys. Aldosterone signals the kidneys to retain sodium rather than excrete it in the urine.