In order to regulate the physiological and behavioral functions, our glands produce signaling molecules known as hormones.
They are very complex molecules with diverse chemical structures while some of them are antagonistic which means that they have totally opposite effects. For instance, insulin and glucagon are known as an antagonistic pair.
Insulin can remove the glucose from the bloodstream for storage as glycogen (a process known as signal transduction) while glucagon promotes the release of glucose into the bloodstream by converting the stored glycogen (a process known as signal transduction),
The antagonistic combination of leptin (the hormone related to satiety) and ghrelin (known as the hunger hormone) is another example of opposite hormones. When we haven’t eaten for a while, the levels of ghrelin tend to increase which makes us hungry. The ghrelin levels are reducing and the leptin levels increasing when we eat, thus leading to decreased hunger.
Our endocrine system is responsible for keeping the balance between various hormones. Pituitary, thyroid, and adrenal glands, testes in men and ovaries in women all secrete hormones which have different actions. When there is a balance in our hormones, we can say that our mental and physical condition is perfect.
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