How do your hormones work? – Emma Bryce

Over the course of our lifetimes, our bodies undergo a series
of extraordinary metamorphoses: we grow, experience puberty, and many of us reproduce. Behind the scenes, the endocrine system works
constantly to orchestrate these changes. Alongside growth and sexual maturity, this system regulates everything
from your sleep to the rhythm of your beating heart, exerting its influence over each
and every one of your cells. The endocrine system relies
on interactions between three features to do its job: glands, hormones, and trillions of cell receptors. Firstly, there are several
hormone-producing glands: three in your brain, and seven in the rest of your body. Each is surrounded by
a network of blood vessels, from which they extract ingredients
to manufacture dozens of hormones. Those hormones are then
pumped out in tiny amounts, usually into the bloodstream. From there, each hormone needs
to locate a set of target cells in order to bring about a specific change. To find its targets,
it’s helped along by receptors, which are special proteins inside
or on the cell’s surface. Those receptors recognise
specific hormones as they waft by, and bind to them. When this happens, that hormone-receptor combination
triggers a range of effects that either increase or decrease
specific processes inside the cell to change the way that cell behaves. By exposing millions of cells at a time to hormones
in carefully-regulated quantities, the endocrine system drives
large-scale changes across the body. Take, for instance, the thyroid
and the two hormones it produces, triiodothyronine and thyroxine. These hormones travel to most
of the body’s cells, where they influence how quickly
those cells use energy and how rapidly they work. In turn, that regulates everything
from breathing rate to heartbeat, body temperature, and digestion. Hormones also have some of their most
visible—and familiar—effects during puberty. In men, puberty begins when
the testes start secreting testosterone. That triggers the gradual development
of the sexual organs, makes facial hair sprout, and causes the voice to deepen and height to increase. In women, estrogen secreted from the
ovaries signals the start of adulthood. It helps the body develop, makes the hips widen, and thickens the womb’s lining, preparing the body
for menstruation or pregnancy. An enduring misconception around
the endocrine system is that there are exclusively male
and female hormones. In fact, men and women
have estrogen and testosterone, just in different amounts. Both hormones play a role
in pregnancy, as well, alongside more than 10 other hormones
that ensure the growth of the fetus, enable birth, and help the mother feed her child. Such periods of hormonal change are also
associated with fluctuations in mood. That’s because hormones can influence the production of certain chemicals
in the brain, like serotonin. When chemical levels shift,
they may cause changes in mood, as well. But that’s not to say that hormones
have unlimited power over us. They’re frequently viewed as the main
drivers of our behavior, making us slaves to their effects,
especially during puberty. But research shows that our behavior
is collectively shaped by a variety of influences, including the brain
and its neurotransmitters, our hormones, and various social factors. The primary function
of the endocrine system is to regulate our bodily processes,
not control us. Sometimes disease, stress, and even diet can disrupt
that regulatory function, however, altering the quantity of hormones
that glands secrete or changing the way that cells respond. Diabetes is one of the most
common hormonal disorders, occurring when the pancreas
secretes too little insulin, a hormone that manages blood sugar levels. And hypo- and hyperthyroidism occur when the thyroid gland makes
too little or too much thyroid hormone. When there’s too little thyroid hormone,
that results in a slowed heart rate, fatigue, and depression, and when there’s too much
thyroid hormone, weight loss, sleeplessness, and irritability. But most of the time, the endocrine system manages to keep
our bodies in a state of balance. And through its constant regulation, it drives the changes that ultimately
help us become who we are.

100 thoughts on “How do your hormones work? – Emma Bryce

  1. There's so much more to learn and understand about the human body. Here's a playlist to get you started:

  2. This is an invitation to see a theory on the nature of time! In this theory we have an emergent uncertain future continuously coming into existence relative to the spontaneous absorption and emission of photon energy. Within such a process the wave particle duality of light and matter in the form of electrons is forming a blank canvas that we can interact with forming the possible into the actual! The future is unfolding with each photon electron coupling or dipole moment relative to the atoms of the periodic table and the individual wavelengths of the electromagnetic spectrum. As part of a universal process of energy exchange that forms the ever changing world of our everyday life the ‘past’ has gone forever. At the smallest scale of this process the ‘past’ is represented by anti-matter annihilation with the symmetry between matter and anti-matter representing the symmetry between the future and the past as the future unfolds photon by photon. In such a theory the mathematics of quantum mechanics represents the physics of ‘time’ with the classical physics of Newton representing processes over a period of time, as in Newton’s differential equations. In my videos I explain how this process is relative to temperature and the phase changes of matter.

  3. male classmates groins be like:

    ɪᴍ ᴀ ꜱʜᴏᴏᴛɪɴɢ ꜱᴛᴀʀ ʟᴇᴀᴘɪɴɢ ᴛʜʀᴏᴜɢʜ ᴛʜᴇ ꜱᴋʏ
    ʟɪᴋᴇ ᴀ ᴛɪɢᴇʀ
    ᴅᴇꜰʏɪɴɢ ᴛʜᴇ ʟᴀᴡꜱ ᴏꜰ ɢʀᴀᴠɪᴛʏʏʏ-

  4. I love the fact that hormones are basically messages that is delivered through blood vessels like roads that can take you anywhere in the body and has an address for a specific part of the body that contains instructions for a specific cells to execute. It's basically how the brain and other organs communicate with each other.

  5. I appreciate the narration of Addison Anderson, he has a very clear pronunciation and fantastic voice. But employ other narraters too. I have kind of gotten bored of hearing only him in a majority of videos.

  6. Could you make a historical video about baltic countries? I’m from latvia and i don’t see many people talkin about our history or culture, which i personally think is pretty interesting! This is just a suggestion though.

  7. So is there a disorder or something that could make your busy produce more testosterone hormones levels? How would it affect the person that has it? @TED-Ed

  8. Great video! One thing I still don't understand is, what is the science behind intersex people? Particularly those with brains typically of the opposite gender or how a person with male genitals can experience menstruation? Where are those hormones produced? Or are these stories fake?

  9. so sure that hormones do not control us in ways that we are not aware. well===============So far, our knowledge of other peptide and hormone systems (such as somatostatin, vasopressin, oxytocin, neurotensin, melatonin, gonadotropin-releasing hormone…) involved in mood disorders are sketchy, and other psychiatric disorders, including schizophrenia, anxiety disorders, eating disorders, suicidal behavior and personality disorders should also be systematically evaluated. In this context, the neuroendocrine strategy still offers new insight in biology and treatment by delineating more homogeneous subgroups However, its possible expansion depends in part on the development of specific pharmacologic tools in order to better investigate the activity of neuroreceptors and receptors for the endocrine target hormones. These advances will consolidate the strengths of the neuroendocrine strategy in elucidating the specific mechanisms by which hormones affect brain function, as well as mechanisms underlying hormone changes during psychiatric states

  10. The quote before the video made the video more interesting..
    BTW love you ted ed…
    This channel is much more enjoyable than my class….

  11. Was suppose to be studying and parents were right in the room, I didn't want to study so this video was interesting and I clicked it, and just because of the words you are using and the teacher kind of voice they thought I was studying the whole time. Muahahahaha I feel like a rebel. Thank you TED-Ed

  12. The best part about commenting is that almost all comments are liked by TedEd 😂. I love their videos… I hope someday a video says "chapter provided by Diksha Chahal"

  13. I really want to use this as my source to my assigment, but my teacher says she needs to know exactly where the videos information comes from. Someone please help me fast.

  14. Hormones play a role in weight gain, fatigue, loss of sleep, and many more health problems. That's why I use a hormone gel. The gel helps to lose weight, and improves sleep, skin, skin tone, mood, libido, and more. For me it has been a miracle in the working.

  15. Visit:

    Join the CME & CPD Accredited 12th Edition of International Conference on Endocrinology during Sep 2-3 2019, at Berlin, Germany.

  16. Horror story mine, abortion weren't my child, recovering over all death an wrongs done to me, ruths story, dads trying to kill me, then rach story as well as Dan n mam poisioning. RACH story was hardest blow the van story i think weren't right think they spiked but she escaped. Not so lucky with dad ,he gets away cant be proved maybe. Shocking rach saved me ill always love u rach

  17. shout out to students who've been studying biology and specially me for being awake until 5AM for learning and studying biology and more

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