Multiple Choice
Which hormone decreases blood glucose levels by promoting cellular uptake of glucose and glycogen synthesis?
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16. The Endocrine System
Hormone Review Table
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Which hormone stimulates the thirst mechanism (increases water intake) as part of maintaining fluid homeostasis?
A
Aldosterone
B
Angiotensin II
C
Atrial natriuretic peptide (ANP)
D
Oxytocin
Verified step by step guidance1
Step 1: Understand the role of fluid homeostasis in the body, which involves maintaining the balance of water and electrolytes to ensure proper cell function and overall health.
Step 2: Review the hormones listed and their primary functions related to fluid balance: Aldosterone promotes sodium retention, ANP promotes sodium excretion, Oxytocin is involved in childbirth and lactation, and Angiotensin II is part of the renin-angiotensin system.
Step 3: Recognize that the thirst mechanism is triggered to increase water intake when the body needs to restore fluid balance, often in response to increased plasma osmolality or decreased blood volume.
Step 4: Identify that Angiotensin II acts on the brain to stimulate the thirst center, prompting an individual to drink more water, thus helping to restore fluid homeostasis.
Step 5: Conclude that among the options, Angiotensin II is the hormone responsible for stimulating the thirst mechanism to increase water intake.
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