GCSE Biology Revision "The Menstrual Cycle"

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  • Опубліковано 16 кві 2018
  • GCSE workbooks www.amazon.co.uk/Dr-Shaun-Don...
    School licenses from 40p per copy www.freesciencelessons.co.uk/...
    In this video, we look at how hormones are involved in the menstrual cycle.
    This video is based on the AQA spec. If you are following a different exam board then you should check your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
    Deliberate Thought by Kevin MacLeod is licensed under a Creative Commons Attribution licence (creativecommons.org/licenses/...)
    Source: incompetech.com/music/royalty-...
    Artist: incompetech.com/

КОМЕНТАРІ • 243

  • @georgebailey3073
    @georgebailey3073 4 роки тому +712

    whos watching this straight after a lesson cus they still dont fully understand it and they know that this guy can teach you in 5 mins what a teacher can't teach in 1 hour

  • @bilaalsohail8784
    @bilaalsohail8784 5 років тому +1047

    someone give this guy an MBE, an OBE, a knighthood and every other award known to man.

    • @ryzqii
      @ryzqii 2 роки тому +12

      True legend

    • @pastaslut
      @pastaslut 2 роки тому +11

      oscar worthy bestie

    • @tomgloverfan6858
      @tomgloverfan6858 2 роки тому +4

      Agree to the fullest

    • @namangoyal3225
      @namangoyal3225 Рік тому +8

      @@pastaslut oscars are for acting 😭

    • @jonahweiss5242
      @jonahweiss5242 8 місяців тому +10

      100m swimming badge and a Duke of Edinburgh Silver

  • @simplystupidtiger6518
    @simplystupidtiger6518 6 років тому +665

    Sir, you are a legend. I genuinely found this topic so hard to understand but now it all makes sense. I love your videos, simple, easy to understand. No waffle and you cover everything on the spec. You are amazing!

  • @lanawalt184
    @lanawalt184 4 роки тому +132

    this guy teaches me more than my actual teacher, love him

  • @liliamargret
    @liliamargret 3 роки тому +189

    God periods are complicated

    • @MintyMinho
      @MintyMinho 2 роки тому +30

      yep, not as fun having them tho

  • @ryanolivares605
    @ryanolivares605 6 років тому +409

    U are an absolute legend, I owe u my science GCSEs.

    • @staceybaker5176
      @staceybaker5176 4 роки тому +23

      Ryan Olivares we should pay him ngl I know bare people who got 7-9 because of watching his videos

    • @vinainn4514
      @vinainn4514 3 роки тому +4

      @@staceybaker5176 he gets paid from youtbe what u on about?

    • @fireemperorzuko8756
      @fireemperorzuko8756 3 роки тому +43

      @@vinainn4514 barely enough, this guys saving thousands of GCSE, some of these will become doctors, scientists etc. If it weren't for him these kids wouldn't make nearly as much so he deserves more, smh how ungrateful are you? Didn't your parents teach you any manners?

    • @queenelizabethiv7012
      @queenelizabethiv7012 3 роки тому +2

      @@fireemperorzuko8756 lmao , nice one . Read my mind

    • @mustafasuleiman7153
      @mustafasuleiman7153 3 роки тому +5

      @@fireemperorzuko8756 chill bro

  • @Khushi-qo6qx
    @Khushi-qo6qx 3 роки тому +100

    menstrual cycle was so hard for me and what's worse is that my teacher made it so complicated but after watching this video i literally understand each and everything you said i wish there were teachers like you in my school

  • @oliviagreenburgh4305
    @oliviagreenburgh4305 5 років тому +47

    Haven’t done a freescience lesson in a while, man I forgot how much I love them

  • @pigwiggy355
    @pigwiggy355 4 роки тому +45

    You're the only channel keeping me from failing biology. Thank you so much.

  • @victorramirez5969
    @victorramirez5969 3 роки тому +46

    In seeing this video I have realised how much my teacher didn't explain during the lesson.
    Time to watch every other one of these videos to find out how much of the GCSE course I have missed.

  • @catcomputer
    @catcomputer 4 роки тому +24

    You don’t need to know the full names for the hormones for the exam, just the abbreviations, but I found it was worth remembering FSHs full name. I could never remember what it did, but as soon as I remembered it was folical stimulating hormone, I remembered it matured the eggs in the ovaries.

  • @snoopdworf5471
    @snoopdworf5471 5 років тому +24

    I can't even describe how much you mean to us as IGCSE students!!!!!!!!!!!!!!!!!!!! Just thank you soooo much for being straight forward, simplistic and at the same time clear when explaining!

  • @doobra27
    @doobra27 3 роки тому +17

    just makes you appreciate how complex even the smallest thing in the human body is

  • @angelwhite8691
    @angelwhite8691 Рік тому +5

    Please give this man BEST TEAChER AWARD ! THANKS SO, SO MUCH , MR BEST TEACHER !

  • @anilerdonmez8835
    @anilerdonmez8835 6 років тому +94

    Lets go lads

  • @todd7744
    @todd7744 6 років тому +94

    Are you going to do A level videos in the future?

  • @beegyoshi7871
    @beegyoshi7871 6 років тому +72

    7 hours before the exam gang

  • @ethiotechtube7861
    @ethiotechtube7861 3 роки тому +10

    Great lesson sir! Thank you very much for your commitment and generosity to provide such a high quality learning material for free!!

  • @forestenrory
    @forestenrory 5 місяців тому +3

    as an afab person i SHOULD know this but i DONT!!!!! and now i do tysm

  • @zruxxy7496
    @zruxxy7496 3 місяці тому +2

    such a hero made me understand in this less than 10 min than my teacher in one hour

  • @lemonflavouredtnt6969
    @lemonflavouredtnt6969 6 років тому +58

    Mr Donnelly, getting things done as per usual

  • @Hy-wm5bv
    @Hy-wm5bv Рік тому +3

    Thank you sir! You explained what my teacher failed to explain in 50 minutes in 5 minutes

  • @maxfagarazzi7289
    @maxfagarazzi7289 6 років тому +16

    11 hours and 11 minutes until bio paper 2, good luck everyone!

  • @Quantum179
    @Quantum179 6 років тому +88

    25 days until first exam I CANT BE BOTHERED AAAAAAAAAAAAAAAAAAAAAAAA

    • @atkillz6589
      @atkillz6589 6 років тому +10

      22 DAYS!! Well 23 for me :) Just remember to get something productive done EVERY 3 hours of free time you have, follow this rule and you'll get something done.

    • @nthn-
      @nthn- 6 років тому +4

      Don't worry. Just try and get something easy done every day, like 3ish 6 mark questions and mark them. You'll learn stuff without having to think about it much as long as you figure out where you went wrong each time + you learn how to write questions

    • @aestheticgarbage6671
      @aestheticgarbage6671 6 років тому +22

      I’ve got an hour till biology :’)

  • @kinzaraza7549
    @kinzaraza7549 2 роки тому +8

    I have my Cambridge Biology exam tomorrow. This helped. Thank you, sir!

  • @corrupted_user258
    @corrupted_user258 3 роки тому +4

    This video = My science teacher's career
    Like I've learn so much from this video, thank you, your a life saver!

  • @mariamalafifi6286
    @mariamalafifi6286 8 місяців тому +3

    I'm so glad this is free

  • @bahahah707
    @bahahah707 4 роки тому +2

    thankyou so much. i was so preplexed before but after watching your video the whole confusion has gone away

  • @mohammedshaik9647
    @mohammedshaik9647 2 роки тому +1

    His videos always help me understand difficult topics

  • @loistulloch
    @loistulloch Рік тому +1

    thank you so much for this, i never understood how the hormones interact but i finally learnt it about an hour before my exam thanks to this video and a 3 marker came up on it! absolute legend

  • @saadchaudhry3379
    @saadchaudhry3379 5 років тому +2

    Absolutely Brilliant Video, so easy to understand!

  • @sethumuthaiah1363
    @sethumuthaiah1363 2 роки тому +1

    this is the only topic i didnt understand and you delivered the informations perfectly. cheers boss.

  • @saadpatel2734
    @saadpatel2734 6 років тому +45

    I want you to do a level videos when i start them after septrmber
    Please fulfil my request
    helpful video

  • @kashoot4782
    @kashoot4782 6 років тому +12

    Why does the level of fsh slightly increase on day 14?

  • @ALR_006
    @ALR_006 2 роки тому

    you definitely made me understand this better! thank you!

  • @saadpatel2734
    @saadpatel2734 6 років тому +3

    really helpful for last minute revision

  • @mako.chiwariro9978
    @mako.chiwariro9978 2 роки тому +2

    I'll be honest i didn't understand this at all when it was taught to me in class but now after watching your video and taking notes it all makes and now hopefully i can be prepared for my end of unit assesment and exceed my target grade

  • @xhandr1254
    @xhandr1254 4 роки тому

    Very Helpful! Thank You!

  • @hotdogu2774
    @hotdogu2774 2 роки тому +5

    if im older and i become a techer, ima just play this video in class once, and then everyone gets it instantly,

  • @Olivia-yy3mb
    @Olivia-yy3mb 6 років тому +1

    Hi thank you so much the videos , they have been helping me all year . I was just wondering when you will have finished this topic by? Thanks again!

  • @zahraimran4788
    @zahraimran4788 3 роки тому

    thank u dude i literally owe my life to u

  • @angelwhite8691
    @angelwhite8691 Рік тому

    Thank you, Sir, Best Teacher !

  • @ismarahiem9659
    @ismarahiem9659 4 роки тому +4

    Your saving lives rn. Think of gcses as a plague....😭

  • @hikari6466
    @hikari6466 Рік тому

    Saving lives 😭🌟🥺 love this man

  • @catlyx2972
    @catlyx2972 4 роки тому

    Cool tie, and the videos are great as well.

  • @marisaeggs
    @marisaeggs 3 роки тому +5

    Can't believe i'm watchign this again for Psychology homework lol

  • @nta.8719
    @nta.8719 2 роки тому

    goat, have my gcse tomorrow and might pass because of you

  • @chenrui9354
    @chenrui9354 4 роки тому +3

    Hi Mr Donnelly,
    Do you know any useful mnemonics for remembering the functions of the 4 hormones?

  • @sajanlakshmi2716
    @sajanlakshmi2716 Рік тому

    love the video mate👍

  • @mattjohnson3670
    @mattjohnson3670 5 років тому +10

    Thank you for the excellent resources sir. Just wondering, after oestrogen inhibits FSH why does progesterone inhibit it as well?

    • @Freesciencelessons
      @Freesciencelessons  5 років тому +37

      No problem and thanks for the comment. Progesterone is released if the woman is pregnant. Progesterone inhibits FSH so that no more eggs are matured. If an egg matured and was released while a woman was already pregnant then it could be fertilised. By inhibiting FSH, this is prevented.

  • @jiyashah294
    @jiyashah294 5 років тому +1

    Thank you so much 🙏🙏🙏🙏

  • @zinebbenali9021
    @zinebbenali9021 5 років тому

    love your videos! They really help me understand biology better

  • @averageknifeenjoyer3108
    @averageknifeenjoyer3108 2 роки тому +6

    Shout out to the ppl watching this the night before the test bcs they forgot to study

  • @me-so4ez
    @me-so4ez 2 роки тому

    Day before biology gcse and this guy is all the revision ive done 🤪🤪🤪

  • @ahmedIbrahim-nr2ty
    @ahmedIbrahim-nr2ty 5 років тому

    thank you for this

  • @thatgirlogechi4635
    @thatgirlogechi4635 5 років тому

    It all makes perfect sense!!!!!!

  • @moondancer9093
    @moondancer9093 3 роки тому +1

    So this was easy? Man I was so scared about this topic but I understand now

  • @Pharita_biased
    @Pharita_biased 3 місяці тому +2

    Hi Sir, would it be helpful to memorise the graph of hormones for the exam

  • @rj.2k506
    @rj.2k506 3 роки тому

    Good stuff Sir thank you

  • @AliKhan-zl2kk
    @AliKhan-zl2kk 6 років тому +1

    @Freesciencelessons Irrelevant questions but does this have to do with negative and positive feedback? As one hormone is inhibited by another or produced for of?

  • @gez333
    @gez333 3 роки тому +2

    how are these lessons free omg, thank you so much for saving my gcses lmfao

  • @atomicnoxane5764
    @atomicnoxane5764 6 років тому

    Ayy last minute revision squad!!!

  • @SuperHihi2001
    @SuperHihi2001 6 років тому +5

    I chose the greatest time to revise this, ughhhhh

  • @itsyourtime6900
    @itsyourtime6900 4 роки тому +2

    Free sciencelessons
    Living legend
    Like if you agree

  • @alexrizzi840
    @alexrizzi840 6 років тому +24

    Your videos are very simple and easy to understand. Do they cover all the small details we need to know for our exams, or are they simplified? Thank you.

  • @sovietdoggo5394
    @sovietdoggo5394 Рік тому +4

    legend

  • @marcusbradley6207
    @marcusbradley6207 4 роки тому +1

    Sir, you r saving my life 😂.

  • @matthiasfernandes5978
    @matthiasfernandes5978 3 роки тому

    great video as per

  • @hi-pg9bp
    @hi-pg9bp 2 роки тому +7

    bio paper 2 in 3 weeks getting that 7-7

  • @julialazzarotti644
    @julialazzarotti644 2 роки тому

    Aaaaaaaa I have no words to say THANK YOU

  • @KermitTh3Fr0g
    @KermitTh3Fr0g 3 роки тому

    Brilliant

  • @LBSiUK
    @LBSiUK Рік тому +2

    Night before Paper 2 gang lessgooo

  • @omz2683
    @omz2683 4 роки тому

    thanks

  • @kevymckeag68
    @kevymckeag68 5 років тому

    Does the start of a cycle begin with a period or the release of an egg? I get confused by this doing past papers

  • @raxii1540
    @raxii1540 3 роки тому

    wow wow wow thank you thank you thank you...i cannot believe i understood this

  • @matthewwebb186
    @matthewwebb186 3 роки тому

    this man might be a don, love him

  • @ImranKhan-kz9qo
    @ImranKhan-kz9qo 4 роки тому +4

    in the exam is it sufficient to say FH and LSH instead of the whole terms ?

  • @lovebyunbacon
    @lovebyunbacon 3 роки тому +1

    Having a topical test tomorrow and im here watching this video at 1am. This topic has to be one of my weaker ,or if not, weakest topic in Bio. Anyone?

  • @hazgaming378
    @hazgaming378 5 років тому

    How does oestrogen stop FSH and then progesterone also stop it.

  • @nikithajustine
    @nikithajustine 4 роки тому +1

    Can u do A- level material please?

  • @natwalton9025
    @natwalton9025 6 років тому +2

    Hi, i hope you take the time to respond to this comment. Obviously we have our exams very soon and there isn't time to revise everything again. For Physics, chemistry and biology which topics are the MOST important for me to have drilled in my head? Thanks.

    • @natwalton9025
      @natwalton9025 6 років тому

      @freesciencelessons

    • @taniyan7322
      @taniyan7322 6 років тому +6

      I think there is enough time to revise everything. But to answer your question, my teacher said revise the topics you feel the least like revising, as those are usually the ones you struggle with. I would still go over the entire spec even if it's breifly. And make sure to look at common exam questions as some of these seem to come in every year's paper.
      Hope this helped.

  • @mohameddalghous
    @mohameddalghous 6 років тому +4

    do u draw the animations or how does it work

  • @ColonelPasty
    @ColonelPasty 2 місяці тому +1

    Loving the haircut in this video 😂

  • @anonymousog9608
    @anonymousog9608 6 років тому

    If the egg is fertilised, will progesterone still be released?

  • @alexinabox6931
    @alexinabox6931 6 років тому +5

    How much more of the course do you still need to cover?

    • @Freesciencelessons
      @Freesciencelessons  6 років тому +17

      I have 6 videos recorded that I need to finish and upload and then about 25 more videos to record and upload. That should be about three weeks work. However, the videos for the paper 1 exams are done.

    • @alexinabox6931
      @alexinabox6931 6 років тому +7

      +Freesciencelessons excellent thank you for your continued effort :)

    • @hanamujagic2085
      @hanamujagic2085 6 років тому +1

      legend

  • @Teni-yh5xz
    @Teni-yh5xz 3 роки тому

    Life saver

  • @elizaclift-millar6418
    @elizaclift-millar6418 6 років тому

    Walking toward the exam hall tomorrow listening to 'the sound of silence'

  • @charliewalker9148
    @charliewalker9148 5 років тому +2

    Half an hour before exam gang

  • @HenryG
    @HenryG 6 років тому +1

    where is workbook?

  • @pleasewait8124
    @pleasewait8124 4 роки тому +1

    Is ovulation and Period the same thing like
    Ovulation is when after 28 days the egg is released from the ovaries
    Wheres
    The period is when the uterus lining and egg releases

    • @doobra27
      @doobra27 3 роки тому +1

      Ovulation occurs on day 14 when the egg is released from the ovary. If the egg is not fertilised after 28 days then it is released from the uterus along with the uterus lining, and this is a period.

  • @shahmeernaqvi9658
    @shahmeernaqvi9658 6 років тому +28

    i love u

  • @Inferno-ob9td
    @Inferno-ob9td 6 років тому +8

    KNIGHTHOOD

  • @user-es4zw1yh2l
    @user-es4zw1yh2l 5 років тому

    In an exam, would you get marked down if you only write the abbreviations, like FSH or LH? Or is it required to remember the exact wording?

    • @reverseblade8116
      @reverseblade8116 5 років тому +1

      No you don't have to remember the exact words. LH,FSH etc.... is fine

    • @MintyMinho
      @MintyMinho 2 роки тому +1

      yo army, im assuming you finished gcses now?

    • @kpopthings7384
      @kpopthings7384 2 роки тому

      @@MintyMinho i was gonna say the same thing lmao

  • @laiba7608
    @laiba7608 4 роки тому +1

    bio exam tomorrow 🤩✌️

  • @harryhiscock7780
    @harryhiscock7780 3 роки тому +1

    I simp this man

  • @maryam.2890
    @maryam.2890 2 роки тому

    Exam tomorrow, here to cramm

  • @samuellubrano2370
    @samuellubrano2370 6 років тому

    At day 14 FSH has a small increase and then drops off again, why is that?

  • @NinjaCokeGaming
    @NinjaCokeGaming 6 років тому +8

    The menstrual cycle is a good way to get to around town!

  • @cheekynandos7212
    @cheekynandos7212 6 років тому +2

    Do we need to know the exact names of hormones in the exam, or can we abbreviate?

  • @JackHolmesHJ
    @JackHolmesHJ Рік тому +1

    2 hours until exam