Examlex
Injecting leptin into leptin-deficient mice reduces the animals' appetites and speeds up their metabolism.
Autonomic Nervous System
The part of the nervous system that controls involuntary functions of the body, including heart rate, digestion, and respiratory rate, divided into the sympathetic and parasympathetic systems.
Parasympathetic
Part of the autonomic nervous system that conserves energy by slowing the heart rate and increasing intestinal and gland activity.
Sympathetic
Part of the autonomic nervous system involved in the body's fight or flight response, regulating heart rate, blood flow, and other functions.
Epinephrine
A hormone and neurotransmitter also known as adrenaline; it increases heart rate, constricts blood vessels, and dilates air passages.
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