Unlike skeletal muscle, smooth muscle may spontaneously contract when it is stretched. What feature of smooth muscle allows it t
o stretch without immediately resulting in a strong contraction? low energy requirements
slow, prolonged contractile activity
smooth muscle tone
stress-relaxation response
The correct answer is "stress relaxation response."
Explanation:
Smooth muscle cells relaxes after being stretched which is called "stress relaxation response". If we explain it a bit further, smooth muscle cells lack gap junctions and because that contraction of a single cell doesn't spread to adjacent cell resulting with no strong contraction.
