Respiratory System, Part 2: Crash Course Anatomy & Physiology #32

Can a paper bag really help you when you are hyperventilating? It turns out that it can. In part 2 of our look at your respiratory system, Hank explains how your blood cells exchange oxygen and CO2 to maintain homeostasis. We'll dive into partial pressure gradients, and how they, along with changes in blood temperature, acidity, and CO2 concentrations, change how hemoglobin binds to gases in your blood. (And yes, we'll explain the paper bag thing too!)

Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!

Chapters:
Introduction: Hyperventilation 00:00
How Blood Cells Exchange Oxygen and CO2 2:09
Partial Pressure Gradients 2:41
How Hemoglobin Binds to Gases in the Blood 4:40
Why Breathing into a Paper Bag Works 7:58
Review 9:25
Credits 9:58

***

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark, Jan Schmid, Simun Niclasen, Robert Kunz, Daniel Baulig, Jason A Saslow, Eric Kitchen, Christian, Beatrice Jin, Anna-Ester Volozh, Eric Knight, Elliot Beter, Jeffrey Thompson, Ian Dundore, Stephen Lawless, Today I Found Out, James Craver, Jessica Wode, Sandra Aft, Jacob Ash, SR Foxley, Christy Huddleston, Steve Marshall, Chris Peters

--

Want to find Crash Course elsewhere on the internet?

[crashcourse]

Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!

[latifahaque]

Mate, it's 3 years on and I'm in medical school now and you're still saving my life.

[katieboland]

This man has been saving my skin since grade 10 chemistry. I'm in nursing school now and still here!

[antoniovasquez]

This episode of Crash Course A&P was... Breath-taking! :D

[jesss]

when theres people in highschool learning with these videos and im in university still struggling. Pray for my exams tomorrow.

[thejollydwarf]

2020 Schools are closed and we've moved to strictly online school and this is gonna help me graduate Highschool. Thanks, my dude!

[coltrxne]

I'm upset I found this channel after I've already spent my whole semester failing Anatomy and Physio in my second year of college. I've only watched these videos for 2 hours and I already feel incredibly prepared for my last final tomorrow. I'll be relying on these more as I retake Physio this summer. Thank you.

[caitlyngreenwood]

The respiratory system is the single hardest system to fully understand that I've come across thus far. I have an exam in the morning on it and I'm pretty sure I'm gonna be needing a paper bag here soon.

[mikeydelasoul]

Man, prepping for my TEAS exam, and I took A&P almost four years ago, and you have helped immensely in my review process!

[thedancingparamedic]

been watching crash course since 8th grade. I'm in paramedic school now and these videos are still coming in clutch.

[sweetdash]

Do you speak fast to make the video short or because it's the way you talk?i always have to watch the videos 3 times to digest all the information.😁😁😁😔😔🤓🤓🤓

[TheScaryface]

i swear i didnt understand this until i watched this video. thank god for these videos. i love you

[DavidParody]

Oral presentations is something I feared doing all my life

[theotv]

Short, simple and concise. You're a great teacher man!

Big thanks from 2nd year Nursing students here from Australia

[stellarfirefly]

I especially enjoy CC episodes such as this one, where multiple fields of science (physics, chemistry, biology) do their dance.

[pambraithwaite]

I would love to have videos on specific disease processes for the different systems (like respiratory diseases like pneumonia, COPD, Tuberculosis, Emphysema, etc... for all the different body systems! PLEASE!!!!

[alexanderfriis]

The affinity oxygen has for hemoglobin can be described as a car with 4 oxygen wheels driving in to an acid tunnel. The longer it goes into the tunnel, the looser the oxygen tires become, and in the end, they will fall right off, leaving space for other things. Like co2 and H+.

[ZarahTy]

I love reading comments about people who've learned a lot from him and currently now in the science field! I too used to watch videos about chemistry back in highschool, now I am in a nursing school! Thank you crash course.

[flexotar]

Thank you, Hank. You make this informing and fun to learn. Like, really, you may not be "the" science guy, but you are a science guy that hosts some of the coolest educational videos of YouTube.

[Sillilesshells]

I want to personally give this man an award, brilliant teaching.