Racial and Economic Inequalities
Privatization
Aging Infrastructure
<span>In the "all or none" law of muscle contraction, it states that when the stimulus applied exceeds threshold then the the nerve sending signals to a few muscle fibers will give a complete response; contraction. Graded response is dependent on how many motor units have been recruited. The more motor units, the greater the force in the contraction.</span>
Answer:
A- I have not idea sorry!
B- Looks like a vacuole
C- Cell membrane
D- Endoplasmic Reticulum
Explanation: