GCSE Biology – How the Eye Works (Part 1) – Structure of the Eye & Iris Reflex #71
This video covers
– The structure (anatomy) of the eye
– How the iris reflex works and allows us to respond to changes in light intensity
Exam board specific info:
AQA – Only triple/separate science
IGCSE Edexcel – Appropriate for all courses
Edexcel – Only triple/separate science
OCR 21st Century – Only triple/separate science
OCR Gateway – Only triple/separate science. Also don’t need to know the iris reflex in response to light intensity, so only the first part about structure
GCSE Chemistry playlist:
GCSE Biology Playlist:
GCSE Physics Playlist:
GCSE today thanks cognitio
The quality is jus🔥🔥
Trying to remember which muscles contract and which muscles relax is so confusing
Thanks
Commented
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
How interesting…..
thank you
did anyone else's eyes feel weird watching this? XD
Please make a video on support movement and locomotion
I will let you know how I did on my test
If you’d like to practise what's covered in this video, check out the lesson on the Cognito platform – https://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
Y’all who’s here preparing for their igs
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❤❤❤
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?
Video was helpful… please create more videos🤩
U are an absolute life saver thank u so much!
Really good explanation!!! Just subbed to your channel!
Can this be downloaded and used for other students
teacher: tells me to watch the vedio
me: dislikes the vedio
me:😈
Have a great day everyone!
i love yall so much, thank you
Does damaging the cornea damages my eye sight?
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!!
It really helped me thanks ❤️❤️
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
Hi triple science class 👀
my teacher gave me this 0-0
Hi, I wanna ask, when we are asleep or our eyes are closed our eyes dilate or not. Because no-matter how much they dilate its not gonna get them anywhere. Hoping You reply
Please check out Biologue – a high school biology content channel explaining IGCSE curriculum based biology topics
https://youtube.com/channel/UCD8xCwd-z9s1CH32boRI2UQ
This was started by a 10th grader student . Kindly like share and subscribe
4:00 very well explained sir
The structure of the eye was not explained properly. The part explaining iris reflex was clear and well explained.
anyone playing this just so your teacher doesn't think you're listening to music
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?
algorithm
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.
Education is not eazzzzzzy
Yo, whos here for there biology lesson
what is the function of the retina
thankyou so much for this video! really well explained! it makes so much more sense now !
Thank you! 😀
This is Indian and you
Would u mind doing a video on Aerobic Respiration?
I thought you were doing physics so are you going back to biology or is this higher than gcse
WOW!! I can't wait for part 2 because this is really useful!