Examlex
Which of the following is not one of the three parts of the small intestine?
Orexin
A type of neurotransmitter that regulates arousal, wakefulness, and appetite, often implicated in sleep disorders such as narcolepsy.
Insulin
A hormone produced by the pancreas that regulates blood sugar levels by facilitating the uptake of glucose into tissues.
Physiological Basis
Physiological basis refers to the underlying biological and physical mechanisms that support functions and behaviors of living organisms.
Stomach Contractions
Involuntary movements of the stomach muscles, often associated with digestion or response to hunger.
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