When a heavy object in hand is lowered, the extension at elbow is brought about by

USMLE USMLE 1
#1

When a heavy object in hand is lowered, the extension at elbow is brought about by

a.Active shortening of the extensors

b. passive shortening of the extensors

c. active lengthening of the flexors

d.active shortening of the flexors

ans:c. active lengthening of the flexors