Which of the following is True about smooth muscle?
A) Certain smooth muscle cells can actually divide to increase their numbers.
B) Smooth muscle, in contrast to skeletal muscle, cannot synthesize or secrete any connective tissue elements.
C) Smooth muscle cannot stretch as much as skeletal muscle.
D) Smooth muscle has well-developed T tubules at the site of invagination.

Question

Quizplus · Accepted Answer

Smooth muscle cells have the ability to divide and increase their numbers, which is known as hyperplasia. This is in contrast to skeletal muscle, where the number of muscle fibers is determined during development and cannot be increased through cell division.

Answer: B
 Smooth muscle does not have the ability to synthesize or secrete any connective tissue elements, such as collagen or elastin. In contrast, skeletal muscle is surrounded by connective tissue layers that the muscle fibers synthesize themselves.

Answer: C
 Smooth muscle can actually stretch more than skeletal muscle, due to its ability to undergo plastic deformation. This allows smooth muscle to be able to contract forcefully without tearing or injuring the muscle fibers.

Answer: D
 Smooth muscle does not have well-developed T tubules, which are invaginations in the cell membrane that allow for the rapid spread of electrical signals throughout skeletal muscle fibers. Instead, smooth muscle relies on other mechanisms to coordinate contraction.

Which of the Following Is True About Smooth Muscle