Download in
Google Play
The Lungs
07/05/2023
47
11
Share
Save
Register
Sign up to get unlimited access to thousands of study materials. It's free!
Access to all documents
Join milions of students
Improve your grades
By signing up you accept Terms of Service and Privacy Policy
Register
Sign up to get unlimited access to thousands of study materials. It's free!
Access to all documents
Join milions of students
Improve your grades
By signing up you accept Terms of Service and Privacy Policy
m m m m m m m m m m m m m THE LUNGS: mouth Bronchiole alveoli 2 lungs → Nasal cavity Breathing: trachea → bronchus passage of air into the lungs : 1. air enters the body and is warmed as it travels through the mouth and nose. 2. It then enters the trachea 3. the trached divides into two branches (bronchi). One bronchus enters each lung. lungs diapnram 4. Each bronchus branches out into smaller tubes called Dronchioles. Air travels through mes bronchioles 5. at the end of the bronchioles, the air enters. One of the many millions of alveoli where gasous exchange takes place. air inhaled rip cages expand as ribo muscles contract Diapnram contracts cmoves down) inspiration (breathing in): The diaphram contracts and moves downwards. The intercoasial muscles contract and move me ribs upwards and outwards. This increases the size of the chest and decreases the air pressure inside it. which sucks air into the lungs- Expiration (breathing out): The diaphram relaxes and moves back to its domed shape. The intercostal muscles relax so the ribs move inwards and downwards under their own weight. This decreases the size of the chest and increases the air pressure in the chest so air is forced out of the lungs composition of the air we breath: breathed in - 21% Oxygen breathed out - 16%. Oxygen breathed in 0.03% carbon dioxide breathed out. 4% carbon dioxide.
Can't find what you're looking for? Explore other subjects.
Knowunity is the #1 education app in five European countries
Knowunity has been named a featured story on Apple and has regularly topped the app store charts in the education category in Germany, Italy, Poland, Switzerland, and the United Kingdom. Join Knowunity today and help millions of students around the world.
4.9+
Average app rating
13 M
Pupils love Knowunity
#1
In education app charts in 11 countries
900 K+
Students have uploaded notes
Still not convinced? See what other students are saying...
iOS User
I love this app so much, I also use it daily. I recommend Knowunity to everyone!!! I went from a D to an A with it :D
Philip, iOS User
The app is very simple and well designed. So far I have always found everything I was looking for :D
Lena, iOS user