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Updated: Aug 14, 2026

06:59
Characterization of Metabolic Status in Nonhuman Primates with the Intravenous Glucose Tolerance Test
Published on: November 13, 2016
Plasma hormonal profiles during summer in langur monkeys (Presbytis entellus entellus)
Abstract:
Plasma estradiol and progesterone levels were analysed by radioimmunoassay in adult female langur monkeys during summer months. Summer was characterized in monkeys with irregular and prolonged menstrual cycles. In anovulatory cycles a reduction of estradiol and progesterone levels was observed as compared to ovulatory cycles.
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Hormones regulate a significant portion of digestion through activation of the neuroendocrine system. The neuroendocrine system of digestion contains many different hormones all with multiple functions that are both, directly and indirectly, involved in digestion.
Major Hormones and Their Functions
Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and lactation.
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and lactation.

