Editing Tubular reabsorption & secretion
From Iusmphysiology
Warning: You are not logged in.
Your IP address will be recorded in this page's edit history.
The edit can be undone.
Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.
Current revision | Your text | ||
Line 175: | Line 175: | ||
*Lipid soluble organics get into the filtrate through non-ionic diffusion through the tubular cell membranes. | *Lipid soluble organics get into the filtrate through non-ionic diffusion through the tubular cell membranes. | ||
*The lipid soluble molecules would simply diffuse back out if they are not trapped in the filtrate. | *The lipid soluble molecules would simply diffuse back out if they are not trapped in the filtrate. | ||
- | *The tubule cells pump hydrogen (H+) into the filtrate in order to trap these lipid soluble molecules in the filtrate. | + | *The tubule cells pump hydrogen (H+) and ammonia into the filtrate in order to trap these lipid soluble molecules in the filtrate. |
- | + | Are both H+ and NH3 secreted? If so, what does each do? | |
- | + | ||
**H+ reacts with acids to neutralize and reabsorb them into the blood. | **H+ reacts with acids to neutralize and reabsorb them into the blood. | ||
+ | **H+ reacts with ammonia to trap it in the filtrate. | ||
+ | **Ammonia reacts with H | ||