Your answer would be the Kidney
The kidney was the first organ to have an artificial replacement; the dialysis machine invented by Kolff in the 1940s.
This is an example of RELEARNING. Relearning is a method of retrieval used to facilitate the remembrance of a memory that has been stored long time ago. Relearning is also called saving method, it can be a mean of measuring retention by measuring how fast one remember forgotten skills that have been learned previously.
Muscle bundles are coverd in endomysium
I think the answer will be b
