Wait, I had to pause my video to type something to you just now. I want you to know that you're a GENIUS. A full on genius. Something I couldn't understand for months was understood in 3-5 minutes. Thank you for your helpful videos, and I can see a lot of effort goes into these videos - so thank you!
sir I cannot thank you enough. You are a legend! I missed out on this whole topic of homeostasis because my teacher was ill and the cover was useless and they weren't qualified teachers.
Hello sir, thank you for publishing these videos, this will help me for my Monday's GCSE biology paper 2 exam. My only request for you sir is to please create A-Level videos for chemistry, biology and physics please.
I love how this guy can teach me something in less than 4 minutes despite my science teacher being unable to make me understand this in 3 weeks, btw anyone doing their mocks/other exams soon?
Me, year 10 mocks tho I want to cry tho 1 because he is a legend of all time and explains things better than an actual qualified teacher 2. Because I missed like 3 to 4 lessons of biology and I am counting on the legend himself rn I have my mocks tomorrow and no one told me anything so I am like crying in pain and in happiness at the same time is that possible??
OHHH BOYYYY HAVE I MISSED YOU MR FREESCIENCELESSONS!!! I'm doing my A Levels at the moment and the only science I do is Psychology and I don't understand this basic neurons stuff so I'm back here again. I forgot how much I love these videos.
You’re the reason that some British kids have passed all science exams and achieved their higher education. I kid you not, not one person in my school doesn’t know who you are. Got my mocks next week and ahhh this video has really brushed me up for it, I’ll think I’ll be decent with it. Im working at a 7 in bio (proud of it) and yes I still get confused with all the key-terms 😭 but this channel is legendary at summarising them up! People should also stop assuming that just because you’re a high/low grade pupil, doesn’t mean you have more independent understanding than the rest because most of the time it’s really not the case. Ahhhh it’s literally down to teachers and nothing more. Teachers give you everything lol and a good one really ups your chances of finding that perfect revision style that suits you best to get those super high grades! A failing student can A+ pass with a good teacher the EXACT same as an A* student can flop with a bad one. Mwah best wishes to gcse and a level students too, if you want it badly trust me the work will always pay off
Hi Free Science Lessons, thank you for your brilliant videos! I really struggled with science but your videos were great revision and helped me get grade 6 in science! I will miss watching your videos!
had no clue the brain has a subconscious when it comes to reactions, I think that also happens when you lie as well. my friend figured out that when you lie, your face makes a small twitch, but the person who is lying has no clue its happening.
Hi sir, Im watching your videos religiously and making a flashcard for each video you make. Do you think this will be effective enough to get a 7/8? I'll be making sure to do practice questions too
So the electrical impulses pass from the spinal cord to the relay neurone and then to the motor neurone, without travelling through the brain where the signals are processed. If that's the case, how are we aware of the action after it has taken place
Hi Sir, (or anyone who knows) I've tried really hard to make sense of this, but I'm quite confused about the difference between a general response of the nervous system, and a reflex action. I understand that the relay neurone is only involved in the reflex response- hoping that's true. Apart from this, are the only other differences that there is no conscious decision made by the brain, and that it's much faster? Also, am I correct in thinking that the diffusion of chemicals across synapses applies to all responses of the nervous system? I apologise if I'm not making too much sense, and your videos are always incredibly clear; this is just a tricky topic for me. Thank you.
Hi Thank you for this just wanted to ask a quick question How and when should I revise for Paper 2 for each science especially biology paper 2 Thanks Much appreciated
a grade 3 or 4 is a low target to getting good GCSE's you should be aiming for minimum grade 5s, you need to be more ambitious , also use plenty of flashcards they are a brilliant revision tool for learning definitions , when you do learn these definitions you have guaranteed yourself a grade 4or 5 and also practise your maths 20% of your marks are on maths.
lastly if you think these tips are rubbish well listen up because I used these tips and i jumped from a grade 3 to a grade 8 within 6 months , but good luck on your GCSEs though.
hi sir on the spec it says 'how is the structure of the nervous system is adapted to its function' so if we get a question on the adaptations of the nervous system what would be the key points? the only adaptation I can think of would be how the cell itself is adapted to carry impulses faster but doesn't seem to be about the system.
the function is to make the response and move the hand away so i think the adaptaion is what is part of the nervous system eg all the neurones and how does this relate to the functioin of moving the hand away, not how the nerve cell is specialised as thats b1 so ye the strucure is all the different nerves and cns which is also the adaptarion etc and the function is the passing along info hope that helps lol
That's a good question and the spec is not clear on what they expect. Personally, I might describe how the nervous system uses electrical impulses which are much faster than hormones. The nervous system targets the impulse to a specific location (eg an effector) whereas hormones travel in the bloodstream around the body. The neurones in the reflex operate without "consulting" the central nervous system first, which make the reflex fast etc. But I don't know what question the exam would ask and they might give you specific information to use or they might give you a nervous system from a different animal and ask you to apply your knowledge. Make sure that you can label the parts of the reflex.
Just for some clarification is it neuron or neurone because I've heard it said both way? Is there a difference between the two or is it just due to preference?
When there is a reflex action, the brain is not involved in this decision, so how does the path of this change in the body (etc. where in a normal loop, the CNS is the brain or spinal cord, where do the sensory neurones flow to)?
heyyy! I am currently revising for a test and I just wanted to know... What does reflex arc mean? You know the specification on the AQA website, how do I know that its reliable/up-to-date? Thxx
Is it correct to say that the cerebral cortex can override the reflex arc? For instance in the case of not dropping a valuable, albeit very hot, object?
Hello, is this response ok? First the stimulus, which is heat, is picked up by the receptor cells in the skin. Next, electrical impulses are sent across the sensory neurone. At the end of the sensory neurone, there is a junction called a synapse. The synapse releases a chemical - which diffuses across in the CNS - which triggers an electrical impulse to the relay neurone. At the end of the relay neurone, there is another synapse - which triggers an electrical impulse to the motor neurone. The electrical impulses go through the motor neurone and reaches an effector. The effector, which is a muscle, contracts and pulls the hand away from the heat.
Thanks for the comment. I'll be releasing the first workbook (Chemistry 1) in September and then the other five over the course of the year. They won't be free but they'll be very cheap (and great value when you see what's in them). There will be separate versions for Triple and Double.
Wait, I had to pause my video to type something to you just now. I want you to know that you're a GENIUS. A full on genius. Something I couldn't understand for months was understood in 3-5 minutes. Thank you for your helpful videos, and I can see a lot of effort goes into these videos - so thank you!
Imagine if this became a part of RUclips Premium, we'd be doomed
it's called freesciencelessons for a reason
R M then it wouldn’t be FREEsciencelessons?
R M don’t give him ideas
R M key word GUYSS “IMAGINE”🙄😂
Zmp 563 i was just about to say that!!!
I like how he keeps his videos short and simple so anyone can understand without having a brain seizure 😂
The comment is appropriate to the topic.
Of course imao👍👍👍👍
Yaa actually I like his way
ratio
this guy has gotten me through many, many tests
nice
@@dragonoidwarlord201 u guys have similar names
@@XENOMATTER-rq8bi nothing spectacular but i found this amazing
good luck to everyone who has biology tomorrow
Question is, why were you looking at paper 2 stuff before paper 1 exam?
btw the time you said it we had paper 1, this vid is for paper 2
how about today🌝
@Nurah Sayed I have one TODAY
@Nurah Sayed in the morning for me😭😭
I say we all refer to him as Sir because let's be honest he deserves it for his service to the community
he needs a knighthood
@@oscarito4333 fr
sir I cannot thank you enough. You are a legend! I missed out on this whole topic of homeostasis because my teacher was ill and the cover was useless and they weren't qualified teachers.
AK GAMING I feel your pain
AK GAMING
Imagine that, but for the entire course
haha 2 years later i missed the whole homeostasis topic sine we did it in quarantine😭😭
@@toniajagbe836 i know them ones
Wish you were my teacher! The work you do is priceless, thank you Sir.
This guy needs a knighthood
JDCFC agreed
He actually does
Yeah he does!
Absolutely!!!
Petition to make that happen
Hello sir, thank you for publishing these videos, this will help me for my Monday's GCSE biology paper 2 exam. My only request for you sir is to please create A-Level videos for chemistry, biology and physics please.
Any advice for me? My mock GCSE is tomorrow
Same I have bio tomorrow
Literally in my school toilet 10 min before exam watching this 🤧
Lol
I love how this guy can teach me something in less than 4 minutes despite my science teacher being unable to make me understand this in 3 weeks, btw anyone doing their mocks/other exams soon?
Me, year 10 mocks tho I want to cry tho
1 because he is a legend of all time and explains things better than an actual qualified teacher
2. Because I missed like 3 to 4 lessons of biology and I am counting on the legend himself rn
I have my mocks tomorrow and no one told me anything so I am like crying in pain and in happiness at the same time is that possible??
@@emilijakolina8423 sadlife,
@@emilijakolina8423 damn, how’d you do?
I posted this whilst I was in yr 10 and i got grade 5/5 for science which is the highest mark for foundation exams, so i did really well
In yr 11 now and have mocks in 2 weeks 😬
My guy be storing an hour content into 5 mins
OHHH BOYYYY HAVE I MISSED YOU MR FREESCIENCELESSONS!!! I'm doing my A Levels at the moment and the only science I do is Psychology and I don't understand this basic neurons stuff so I'm back here again. I forgot how much I love these videos.
Welcome back. I'm glad to be able to help.
I’m using this now for BMAT revision but I just want to say thank you for helping me so much in 2018 for my GCSEs, you helped me achieve my 9 :)
my clueless brain watching this a night before the mock, thank you freesciencelessons
Here after my teacher was being clueless and her little brain capacity wasn’t adequate enough to educate me. Thank you free science lessons
THIS GUY HELPS ME AND SO MANY OTHERS SOOOOOOO MUCH!
The only youtuber that actually helps
You’re the reason that some British kids have passed all science exams and achieved their higher education. I kid you not, not one person in my school doesn’t know who you are. Got my mocks next week and ahhh this video has really brushed me up for it, I’ll think I’ll be decent with it.
Im working at a 7 in bio (proud of it) and yes I still get confused with all the key-terms 😭 but this channel is legendary at summarising them up! People should also stop assuming that just because you’re a high/low grade pupil, doesn’t mean you have more independent understanding than the rest because most of the time it’s really not the case. Ahhhh it’s literally down to teachers and nothing more. Teachers give you everything lol and a good one really ups your chances of finding that perfect revision style that suits you best to get those super high grades! A failing student can A+ pass with a good teacher the EXACT same as an A* student can flop with a bad one. Mwah best wishes to gcse and a level students too, if you want it badly trust me the work will always pay off
here's a helpful acronym for reflex actions:
SRSR ME
Stimuli
Receptors
Sensory neurone
Relay neurone
Motor neurone
Effector
Am i the only one watching these vids this yr?
Hi Free Science Lessons, thank you for your brilliant videos! I really struggled with science but your videos were great revision and helped me get grade 6 in science! I will miss watching your videos!
Where 2024 people at?
had no clue the brain has a subconscious when it comes to reactions, I think that also happens when you lie as well. my friend figured out that when you lie, your face makes a small twitch, but the person who is lying has no clue its happening.
He is the Mr Hegarty of science
The fact that this guy rescued me from many tests. Thank you sir!
Hi sir, Im watching your videos religiously and making a flashcard for each video you make. Do you think this will be effective enough to get a 7/8? I'll be making sure to do practice questions too
def
how did it go?
how did u do ?
Best teacher of the year nominee right here
its sad how nobody knows his name.
Wez Shaun Donnelly
No it’s Shaun the Don.
Shaun
Only uncultured people do not.
this guy is a literal legend
hey Shaun Donnelly i really appreciate your effects on my education
thank you I was taught this in class and I had no clue what was going on thank you for putting this all in a 3-4min vid I really understood this
same
ah i see ur a val player
This guy is my all time inspiration
Thank you so much, this helps me so much as my mocks are coming up in November ☺🙏
i love u you underrated legend x
how can i remember your videos in the most efficient way
making notes at the same time as he is talking, watching multiple times etc...
So the electrical impulses pass from the spinal cord to the relay neurone and then to the motor neurone, without travelling through the brain where the signals are processed.
If that's the case, how are we aware of the action after it has taken place
it goes through the brain afterwords
i don't think he appreciates how amazing he is
Thank you so much I didn’t understand a word of this topic
This is guy is better than all of my science teachers put together
Very clear explanation of the reflex Arc defined. Thankyou
omg thank you for starting this we haven't even learnt the nervous system yet ek
YOU ARE A GENIUS!! AN ABSOLUTE GENIUS!
He got rid of the like/dislike bar because he knew he didn't want people to get jealous of that 1 - 0 ratio.
I've got to say, B2 is my favourite part of the syllabus, closely followed by P2.
Is coordination centre and central nervous system the same thing??
Hi Sir, (or anyone who knows) I've tried really hard to make sense of this, but I'm quite confused about the difference between a general response of the nervous system, and a reflex action.
I understand that the relay neurone is only involved in the reflex response- hoping that's true. Apart from this, are the only other differences that there is no conscious decision made by the brain, and that it's much faster? Also, am I correct in thinking that the diffusion of chemicals across synapses applies to all responses of the nervous system?
I apologise if I'm not making too much sense, and your videos are always incredibly clear; this is just a tricky topic for me.
Thank you.
Essentially you are correct. However, I think that relay neurones are found in other aspects of the nervous system apart from reflexes.
Right. I'm finding this clearer now so many thanks for your response (and all your efforts with these videos!).
Made my revision and my notes short and very easy 👍👍 Thankyouu
BIOLOGY TMRW, THIS GUY SAVING ME FR
i love ur vids, but WHY IS DIS SO COMPLICATED
give this man a million dollars @MrBeast
Hi
Thank you for this just wanted to ask a quick question
How and when should I revise for Paper 2 for each science especially biology paper 2
Thanks
Much appreciated
3 years later and no reply....
How did you do in biology?
@@JJ-vu9bj I wonder how?
Hi Sir. Thank you for this video, it is helping me a lot with my GCSEs. Do you know any tips to get a Grade 3-4 in Biology?
a grade 3 or 4 is a low target to getting good GCSE's you should be aiming for minimum grade 5s, you need to be more ambitious , also use plenty of flashcards they are a brilliant revision tool for learning definitions , when you do learn these definitions you have guaranteed yourself a grade 4or 5 and also practise your maths 20% of your marks are on maths.
lastly if you think these tips are rubbish well listen up because I used these tips and i jumped from a grade 3 to a grade 8 within 6 months , but good luck on your GCSEs though.
what did u do with the flashcard that helped u so much
well i wrote the questions at the front and the answer at the back , so when you go over them they embed in your head so you wont forget them.
hi sir
on the spec it says 'how is the structure of the nervous system is adapted to its function' so if we get a question on the adaptations of the nervous system what would be the key points? the only adaptation I can think of would be how the cell itself is adapted to carry impulses faster but doesn't seem to be about the system.
the function is to make the response and move the hand away so i think the adaptaion is what is part of the nervous system eg all the neurones and how does this relate to the functioin of moving the hand away, not how the nerve cell is specialised as thats b1 so ye the strucure is all the different nerves and cns which is also the adaptarion etc and the function is the passing along info
hope that helps lol
That's a good question and the spec is not clear on what they expect. Personally, I might describe how the nervous system uses electrical impulses which are much faster than hormones. The nervous system targets the impulse to a specific location (eg an effector) whereas hormones travel in the bloodstream around the body. The neurones in the reflex operate without "consulting" the central nervous system first, which make the reflex fast etc.
But I don't know what question the exam would ask and they might give you specific information to use or they might give you a nervous system from a different animal and ask you to apply your knowledge. Make sure that you can label the parts of the reflex.
thanks your answer would make a lot more sense, cheers for the quick reply.
this guy needs the worlds financial funds all together and given to him
Thank you for your videos friend they are very helpful ❤
do we need to talk about axon and neurotransmitters etc??
yes i think so but not guaranteed :)
Thank you so much this helped a lot ❤️
It really is
This guy came to my school before in our science class
i keep getting distracted with the ksi and deji beef and before that the bloody james and tati crap
Me
Hi sir, just wondering if there will be a video coming out about the brain for the new 9-1 course, thanks, keep up the good work.
Thank you very much so helpful!
yumon bio exam tuesday
Is your CNS the only coordinating centre??
Yes that's correct.
SHAUN HELP EXAM IN 20MINS WORK YOUR SCIENCE MAN MAGIC
Hi Sir when will the videos for topic 7 be up? The ecology section
I'll be starting to upload them in around one week.
GCSE 2022 anyone?
isn't a reflex arc just an electrical signal though- so that it is quicker, pretty sure that BBC says it does not go across any synapses
what an absolute legend!!!
I've had to watch this 3 times in order to understand it; this is a very tricky topic for me.
sameeee
Do we need to read dorsal root, white matter and other parts' structure and functions of reflex arc???
Hi. Just wondering Do synapses only come into action in reflexes only???
No
Thank you so much, this is really helpful
What if relay neuron is not present and sensory neuron is directly connected with the motor neurons?
Don't let the thought of exams play on your nerves...
I know where you got that from
Just for some clarification is it neuron or neurone because I've heard it said both way? Is there a difference between the two or is it just due to preference?
darthvader532 It’s neutron, I’m 11 months late but oh well
@@kamaraolejnik846 no it's not because a neutron is a subatomic particle and is nothing to do with neurone.
When there is a reflex action, the brain is not involved in this decision, so how does the path of this change in the body (etc. where in a normal loop, the CNS is the brain or spinal cord, where do the sensory neurones flow to)?
Reflex actions are coordinated in the spinal column
Don’t think you need to know that for gcse
The only way I’m passing gcse is this
HI SIR, i was wondering if you could please tell me when your workbooks will be out as i have been waiting a while. Thanks! Great video by the way!
Wow great video!Could you please do a video of neurotransmitters?As it has just been added to the excel specification for GCSE.
This guys a legend
heyyy! I am currently revising for a test and I just wanted to know...
What does reflex arc mean?
You know the specification on the AQA website, how do I know that its reliable/up-to-date?
Thxx
i think it just updates automatically, the most updated version will always be on there :)
sameee bestie i didn't understand anything from my biology lesson since I wans't there for like 3 lessons In a row
why are you reading this. FOCUS ON THE VIDEO
Thanks Sean!
Is it correct to say that the cerebral cortex can override the reflex arc? For instance in the case of not dropping a valuable, albeit very hot, object?
Fantastic video big boy
In the exam do you have to specify that they are sensory and motor neurones? Thanks :-)
Yes I think you should in order to get full marks.
Thank you so much Sir.
Hello, is this response ok?
First the stimulus, which is heat, is picked up by the receptor cells in the skin. Next, electrical impulses are sent across the sensory neurone. At the end of the sensory neurone, there is a junction called a synapse. The synapse releases a chemical - which diffuses across in the CNS - which triggers an electrical impulse to the relay neurone. At the end of the relay neurone, there is another synapse - which triggers an electrical impulse to the motor neurone. The electrical impulses go through the motor neurone and reaches an effector. The effector, which is a muscle, contracts and pulls the hand away from the heat.
Hi. Do you know if "The Eye" is on triple or trilogy?
Jeonex triple
could you do a lesson on the difference in structure of viruses, bacteria, fungi, human cells and plant cells?
Do we need to know what the chemical is called that diffuses across a synapse?? Thanks
Not for AQA. Simply saying chemical or neurotransmitter will be fine.
Do you make videos for the extended syllabus too?
Do an individual neurone connects( the length of) from finger to CNS, sir
Have you made a video about negative feedback? Thx
The backbone of our society.
Is there any difference if you called the sensory neurone as the sensory nerve ?
When will your work booklets be out? Also, are they for triple sciences or just double? Thank you - great video!!
Thanks for the comment. I'll be releasing the first workbook (Chemistry 1) in September and then the other five over the course of the year. They won't be free but they'll be very cheap (and great value when you see what's in them). There will be separate versions for Triple and Double.
Thank you
are u gunna do the brain video? thanks
Living legend