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Which type of chemical signals act locally but affect cell types other than the releasing cells?
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10. Cell Signaling
Introduction to Cell Signaling
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Leptin is released by __________ and signals to the brain to ___________.
A
muscle cells; stimulate muscle contraction
B
neurons; promote sleep
C
pancreatic cells; increase blood glucose
D
adipose tissue; decrease appetite
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Understand the role of leptin: Leptin is a hormone primarily involved in regulating energy balance by signaling to the brain about the body's fat stores.
Identify the source of leptin: Leptin is secreted by adipose tissue (fat cells), which plays a key role in energy storage and metabolism.
Determine the target of leptin: Leptin acts on the hypothalamus in the brain, which is responsible for regulating hunger and appetite.
Understand the effect of leptin signaling: When leptin levels are high, it signals the brain to decrease appetite and food intake, helping to maintain energy balance.
Match the correct answer: Based on the information, leptin is released by adipose tissue and signals to the brain to decrease appetite.
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