Save
Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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
share
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

Resp. Physio

Hemoglobin and Oxygen Transport

QuestionAnswer
O2 transport oxygen is transported in blood in two ways:  dissolved in plasma (only 1.5% because O2 is poorly soluble in plasma)  bound to hemoglobin inside RBCs (98.5% is carried this way)
Hemoglobin hemoglobin (Hb) is a protein composed of 4 polypeptide chain subunits  each subunit is bound to an iron-containing heme group  since iron ions serve as oxygen-binding sites, each hemoglobin can rapidly and reversibly bind 4 oxygen molecules
Hemoglobin II a hemoglobin molecule bound with oxygen is called oxyhemoglobin (HbO2)  a hemoglobin molecule that has released its oxygen is called deoxyhemoglobin (HHb)
Hemoglobin and Oxygen Transport when the first oxygen molecule binds the first iron molecule, the hemoglobin changes shape and the affinity for the other 3 oxygen molecules progressively increases
Hemoglobin and Oxygen Transport II similarly, when the first oxygen is unloaded, the affinity for oxygen is decreased and it becomes progressively easier for the other 3 oxygen molecules to dissociate from the hemoglobin
Hemoglobin and Oxygen Transport III  hemoglobin is fully saturated when all four heme groups are bound to oxygen  if fewer than all four heme groups are bound, the hemoglobin is said to be partially saturated
Created by: zeenat
 

 



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