Great Glands - Your Endocrine System: CrashCourse Biology #33
Hank fills us in on the endocrine system - the system of glands which produce and secrete different types of hormones directly into the bloodstream to regulate the body's growth, metabolism,...
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Hormones! Those things that make teenagers moody and miserable, and they cause growth spurts and acne, and they can make a perfectly normal student totally obsessed with his algebra teacher. Not that I have any real, boots-on-the-ground experience with that last one. But all that mayhem is just the handiwork of your sex hormones. The fact is that there are more than 50 different kinds of hormones coursing through you right now, and all multicellular organisms produce one kind or another. For instance, hormones regulate the process of metamorphosis in insects, and they're what stimulate plants to grow and fruits to ripen. In animals, the network that makes and releases hormones, your endocrine system, is one of the two ways, along with the nervous s...
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Hormones! Those things that make teenagers moody and miserable, and they cause growth spurts and acne, and they can make a perfectly normal student totally obsessed with his algebra teacher. Not that I have any real, boots-on-the-ground experience with that last one. But all that mayhem is just the handiwork of your sex hormones. The fact is that there are more than 50 different kinds of hormones coursing through you right now, and all multicellular organisms produce one kind or another. For instance, hormones regulate the process of metamorphosis in insects, and they're what stimulate plants to grow and fruits to ripen. In animals, the network that makes and releases hormones, your endocrine system, is one of the two ways, along with the nervous s...
