Question

When a muscle fiber contracts as much as it can it is called the _________________Answer Line.
(1 point)
Responses

maximum potential principle
maximum potential principle

contraction principle
contraction principle

muscular capacity principle
muscular capacity principle

all or none principle
all or none principle

Answer 1

all or none principle

Explanation: An individual muscle fiber, when stimulated above its threshold, contracts fully or not at all — it cannot contract partially.