The largest lymphatic organ, a blood reservoir
Particularly large and important during youth; produces hormones that help to program the immune system
Collectively called MALT
Removes aged and defective red blood cells
Prevents bacteria from breaching the intestinal wall
Site of hemopoiesis in embryos
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions above and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.
NEW! Voice Recording
Click the mic to start.