Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Respiratory system G

Respiratory system & gas exchange

QuestionAnswer
Respiratory system body/organ system that facilitates the process of breathing Function: take in oxygen & remove carbon dioxide
Breathing mechanical/physical movement of air into and out of lungs
Respiration chemical reaction that occurs in cells where the energy stored in glucose is released & stored as ATP
Ventilation process of air moving into & out of lungs
inspiration/ inhalation Diaphragm contracts & flattens Intercostal muscles contract - pull ribs up & out Volume increases Air pressure in lungs lower compared to outside Air moves into the lungs from high pressure outside to low pressure inside
expiration/ exhalation Diaphragm relaxes & pushes up Intercostal muscles - relax - ribs go down & in Volume decreases Air pressure in lungs higher compared to outside Air moves out of the lung from high pressure inside to low pressure outside of body
Breathing mechanics all about creating a pressure gradient: a difference in air pressure between 2 regions - lungs & outside air large volume lower pressure --> volume & pressure
hoow humans change volume Diaphragm intercostal muscles Ribcage
Gas exchange transfer of oxygen gas & carbon dioxide across a surface (alveoli) based on concentration gradient via diffusion
alveoli features (why) Millions of alveoli (large SA) One cell thick walls - dont have to travel far Surrounded by capillary network - as much blood as possible Surfaces are moistened - gasses only diffuse when dissolved in liquid
respiratory features Constant flow of blood through capillaries - old blood replaced by new Constant ventilation of the air in the lungs - ensure concenttration gradient
oxygen Oxygen diffuses from air in the alveoli to the blood due to concentration of oxygen in air , in alveoli, is high compared to the concentration in the blood - low Oxygen gas diffuses from air to blood with/along the concentration gradient
Carbon dioxide Carbon dioxide diffuses from the blood to the air in the alveoli due to the concentration of carbon dioxide in blood - is high - compared to the concentration of carbon dioxide in the air - alveoli low - with the concentration gradient
Created by: procrast
Popular Biology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards