Central chemoreceptors | Respiratory system physiology | NCLEX-RN | Khan Academy
ฝัง
- เผยแพร่เมื่อ 27 ก.พ. 2013
- Find out how the your body uses special cells that are central to the brain (inside the brain) to sense levels of CO2 and pH. Rishi is a pediatric infectious disease physician and works at Khan Academy. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Created by Rishi Desai.
Watch the next lesson: www.khanacademy.org/test-prep...
Missed the previous lesson? www.khanacademy.org/test-prep...
NCLEX-RN on Khan Academy: A collection of questions from content covered on the NCLEX-RN. These questions are available under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License (available at creativecommons.org/licenses/b....
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to Khan Academy’s NCLEX-RN channel: / @khanacademynclex-rn7898
Subscribe to Khan Academy: th-cam.com/users/subscription_...
I'm glad that you and your classmates are enjoying the videos! I will be working on kidney videos soon, but first have a few more lung videos to wrap up. =)
Plz make the video more black so people cant see anything.
This covers stuff that is probably relevant to anyone in health care (or wants to know more about their body). =) If you're going to be a nurse, I say watch and enjoy! =)
wow that was a beautifully drawn relationship about astrocytes and chemo receptors
I watch a lot of A & P videos, here, at Ninja Nerd and Dr Matt and Dr Mike. Because I've been focusing on other stuff, I took a break. To my surprise (and dismay), getting back was tough-- concentration and understanding were hard. Then I watched this video-- which was totally interesting and fun. Thanks for welcoming me back!
Your videos and pictures and everything is so neat! It's great to see how someone really has the time to teach and explain these things to other people! Thank You sir! =)
THANK YOU SO MUCH!! I was so lost before this, I wouldn't have believed it was possible to understand it all!!
I cannot describe how awesome I think you are. Me and my nursing school classmates are BIG fans. Many people have the heart of a teacher, but lack the gift of explanation. You, my friend, have both. Awesome.
Now, if you could only do a series on Electrolyte imbalances by the time of our next exam... =) Thank you so much for sharing your gift.
FANTASTIC AND GREAT TO UNDERSTAND, NEVER SEEN BETTER EXPLANATION. EXXCELLENT
khan academy ur the best.... tqs to everyone for playing their part in this..... project...... god bless you........... i love u so much................
Thank you so much for your videos!! In my pathophysiology book says that CO2 in the arterial blood can pass through (diffuses across) the blood brain barrier into the CSF and combine with H2O that forms carbonic acid then the central chemoreceptors are sensing the increased CO2 and H levels.
You videos are so helpful. They make my pathophysiology class much more understandable. Thank you!!!!
Dr.Rishi your explanation is amazing..☺..!!!
I am a first year paramedicine student and I cannot tell you how valuable these videos are. If you could do ECG's with shockable and non shockable rhythm's and some pharmacology. That would be incredible. Thanks again
Honestly, you made these videos right on time for my bio final! thanks :D :D
thank you so much for saving my life!!
You are a brilliant man!
Thax alot ...you'er amazing prof
the drawings are really nice !! enjoy it so much
You, sir, are a BOSS!!!!
best tutorial ever! Jjangg!! it's a serious worth watching. u teaches better thn my teacher lol
Wow. This is amazing! Not too short, but gets to the point!
U r cute
Thank you so much for your videos. I'm an ER nurse who has recently made the jump to the ICU and I find your videos informative, but more importantly your content is easy to understand. Keep up the good work. I know that you're receiving multiple requests for topics, but one of these days could you incorporate a few of the common IV drip medications (nitro, dopamine, levophed)? Thanks once again.
Thank you! You explain it in the easiest way possible. Where have you been all my life lol...?
Brilliant !
thank you!
I love it .
Awsome sir!!!
@ 5:22 he says CO2 and H2O form carbonic anhydrase, but H2CO3 is actually carbonic acid, which is formed via the ENZYME carbonic anhydrase. This enzyme is the target of carbonic anhydrase inhibitors such as acetazolamide (which can cause metabolic acidosis).
thank you so much
Excellent. Wao! ❤️
This is SO helpful
Khan academi is the best resource for clearing cvs physiology concepts
OMMMGGG I can not tell u thank you enoughhh frrr I have an assightment on this and I didn’t understand anything and I was just staring at my blank paper then your video out of everyone eleses.thank you thank you thank yoooyuuu
This video is very good. Good luck!
Amazing video, clear explanation! I just subscribed!! Keep up the good work =)
Great explanation!! Could you find any time to make videos about the central nervous system and some of the processes that occur in normally functioning brain and with a particular disease? That would be really exciting.
how and why is it that my uni takes 10 pages/5 hours to explain this concept that you easily explain in 7 minutes and 43 seconds...
I just want to take a minutes and appreciate the level of details of the brain drawn here
Brand new sub keep up the work
thank you
Amazing
Thank you😊
life saver
enjoy'd indeed!
Hey!! I just wanted to say how much I enjoy your videos. They're quite amazing and have helped me over the years get through school. This video about central chemoreceptors in particular I would like to make a suggestion. Can you throw in the "why"? People who are trying to learn this for the first time may not know that this the increase in CO2 causes humans to take a breath or with you saying that somewhere in your video will be that 'light bulb' that goes off for them to finally get the concept of breathing.
Please khan, could you do a video about the kidneys? We've them coming up in medical now. You're the best!
Such an amazing instructor. if my instructor was like this my studies would be so much better lol
My professor was late for something (they said)
And “explained” this in 2minutes and left the class🥲
شكرا
Hey Rishi, wonderful videos! I was wondering though, when @ 5:23 in this video you mention that CO2 + H20 produces "carbonic anhydrase"...isn't that an enzyme in red blood cells? I thought that CO2 + H20 produces carbonic acid. Are these interchangeable terms?
Thank you sòooooooooooooooooooooooooooooooooooooooooooooooooo much
New sub.
this is a great video. is this for medical students ? i will be studying nursing, should i start learning this stuff?
Amazing, purely mindblowin explaination, nigga
are there any pharmacology videos? I need help remembering names of drugs! :O thanks
You have a lot better handwriting than Sal! I thought doctors were supposed to have bad handwriting
Is tachypnea and hyperventilation same thing?
Could you explain why central chemoreceptors don’t respond to low oxygen levels please?
I thought respiratory centers in medulla respond to low pH (therefore increase H+) and not really CO2. How is the AP triggered from just that? is it because H+ changes the membrane potential which then triggers it? I don't really understand what happens between increase H+ and neuron AP signaling..
anyone can explain please?
Hopefully I can help.
Once the CO2 in the blood passes the blood brain barrier and enters the CSF, it will react with H20 to ultimately make bicarbonate and hydrogen ions. The receptors are highly sensitive to the hydrogen ions and once they sense it, the receptors will be stimulated and send the signal to the DRG and Pneumotaxic center to increase breathing.
yup makes sense! thank you :) I just learnt about neuro this semester and it does make a lot more sense ! thanks a lot :)
+Sarah Woon no problem. Good luck in school. Cheers!
mareeyo1 thanks dude
I like to look at it as C02 is an acid (H+), so naturally the higher C02 levels, the higher amount of H+. And of course, when your H+ value is high, your pH will be low.
I like to call it the "med-oo-luh" lol
Stop flexin on us with those beautiful drawings
Is this Mr.Anderson
I thought H+ cannot break the blood brain barrier so the central chemoreceptors activity is only dependent on CO2 levels?
Correction*
Blood CO2 diffuses into the Cerebral-spinal fluid(CSF).
CO2 reacts with the water(H20), forming carbonic acid which is then dissociated into a bicarbonate ion and proton (H+).
the pH or H+ is monitored as well is the CO2 by the central chemoreceptors IN THE CSF
Indirectly measuring the blood CO2 by changes in the levels of CO2 and H+ in the CSF.
This video is very good. Good luck!