Your blood needs enough push to reach every part of you. These kidney cells keep watch, and call for help when the push gets too low.
Drag to turn it around. Use the buttons to zoom in and try things from the lessons.
The 3D model can't load right now. Check your internet connection, or try a different web browser.
Each kidney filter has a tiny blood vessel going in. In its wall are special juxtaglomerular cells. Juxta means next to, so the name means next to the filter.
They are plump cells filled with tiny packets called granules. The granules hold a chemical called renin.
These cells can feel how much the blood vessel wall is being stretched. Less stretch means lower blood pressure.
Steady blood pressure helps your brain and muscles get the blood they need.
Press Release renin on the 3D model.
By Operation Ouch. A fun video for kids.
Watch on YouTube →