Question

the alternating contraction and relaxation of the longitudinal and circular layers mixing substances in the lumen and squeezing them through an organs internal pathway is characteristic of smooth muscle. true false

Explanation:

Smooth muscle is involuntary and found in many internal organs. Its alternating contraction and relaxation (peristalsis) mix substances in the lumen (like in the digestive tract) and squeeze them through the organ's internal pathway.

Answer:

True