GCSE Biology - How the Eye Works (Part 1) - Structure of the Eye & Iris Reflex #31 

You are the best channel for GCSE and IGCSE Sciences and Math. I cannot type out enough words to describe how useful your content has been. God bless your soul. You are an angel

whos revising for paper 2 tomorrow? 😒

please become my teacher i am understanding my syllabus because of you you don't know how much i am grateful for this continue making this kind of amazing videos!!

Hey, this is awesome! I found this really helpful for my biology revision for my test next week. My teacher reccommended you to my class. Short, sweet and quick

WOW!! I can't wait for part 2 because this is really useful!

You explain it so much easier omg I wish I wrote notes from you

Great video! Really helpful for my biology test! Thanks!

Who’s watching day before biology gcse

Got my bio exam tomorrow and i am so cooked, what a fod subject!

this was insanely helpful, thanks!!

really helping have got my biology exam this morning!

Really good explanation!!! Just subbed to your channel!

My friend u are the GOAT of IGCSE science

If you’d like to practise what's covered in this video, check out the lesson on the Cognito platform - cognitoedu.org/coursesubtopic/b2-gcse-aqa-h-t_4.13. The platform’s totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom

you give hand in revising my portions for my exams in a sweet,short and in a crisp way. love all ur videos. love from India❤❤❤

Very useful page i am impressed very very very Nice Best Of Luck and Thank You for these intense and useful information not less than a Good and inspiring lecture.

Thanks for you teaching, you've made it simpler for me than my teacher👏👏

Thank you so much for this wonderful video, it was very helpful! Why I cannot even believe how much I just learned from you in just under 5 minutes 😃😂😁

thankyou so much for this video! really well explained! it makes so much more sense now !

Thank you! :D

This video was really helpful! It got me thinking about treating colour-blindness: could scientists treat it by inserting cone cells into the (colour-blind) patient’s eye?

Hi triple science class 👀

I ABSOLUTELY LOVE YOUR VIDEOS AND YOUR WEBSITE

U are an absolute life saver thank u so much!

i love yall so much, thank you

Wow the way you taught this concept was so much better yhen my teacher 😊if you were my teacher i would be trully blessed

Yo, whos here for there biology lesson

Video was helpful... please create more videos🤩

your videos have been very useful to me thank you very much and plus they are free,first time i heard about them it seemed like i had to pay to view them but nope🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥

Would u mind doing a video on Aerobic Respiration?

Thanks my image i had to study overwhelmed me

In this playlist for GSCE biology what content do you miss out on? Because it mentions that you covered the majority of content. Thank you so much.

Could you please make a video on coordination?

Please make a video on support movement and locomotion

thank you

I thought you were doing physics so are you going back to biology or is this higher than gcse

GCSE today thanks cognitio

Have a great day everyone!

It says about the pupil reflex in the syllabus.... Is the iris relfex and the pupil reflex the same thing?

thank u

Since they cornea absorbs oxygen only by diffusion directly from the air, then if a person sleeps and closes his/her eyelid, the cells in the cornea wouldn't respire any way right? And consider if a person sleeps for a long time, say 10 hours. Does that have an effect on the cells of the cornea and its job in the eye?

I have a question- when you need to see objects at a distance, what happens to the lens??

U teached better than teacher.

Thanks

Can this be downloaded and used for other students

Fact to impress your examiner: the point on the retina that the light focuses on is called the fovea (centralis)

It really helped me thanks ❤️❤️

Got biology tomorrow wish me luvk

Does damaging the cornea damages my eye sight?

when in bright light, the pupil constricts to reduce light entering the eye this can be done when the radial muscles relax and the circular muscles contract when in dim light, the pupil dilates to allow more light to enter the eye, this can be done when the circular muscles relax and the radial muscles contract

What exam board do you teach

4:00 very well explained sir

What exam board is this for?

You didn't talk about circally muscle and sercally legament

Y’all who’s here preparing for their igs

what is the function of the retina

i don't understand what my teachers explain in school so i rely on u but u never let em down thx

How interesting…..

I see. How very intereyesting

The structure of the eye was not explained properly. The part explaining iris reflex was clear and well explained.

Trying to remember which muscles contract and which muscles relax is so confusing

when you are going to put more videos !!!!!!!!!!!! i need videos for 11 grade please without you i whould not pass

Commented

dim light - pupil dilate- radial muscles contract- circular muscles relax bright light - pupil constrict - circular muscles contract- radial muscles relax

I will let you know how I did on my test

anyone playing this just so your teacher doesn't think you're listening to music

im the 135th comment!!!

❤my eye seen something too seen even to the dark sign up the heaven above,why?stoney is a one eye,one heart.

Eyes.

Pls sum things up at the end of your videos. Thank you.

❤high majesty ,accept my poor opinion to the eye,the is united to the brain and heart. Sense of feeling and taste and touch or etc.the is a magic sense,many hide on this? Even they pick up to the camera or to the cctv camera or etc. To erase it and gone! the@ EYE@

algorithm

did anyone else's eyes feel weird watching this? XD

my teacher gave me this 0-0

This is Indian and you

Education is not eazzzzzzy

👎🏻

teacher: tells me to watch the vedio me: dislikes the vedio me:😈