Which of the following characteristics is NOT typical of smooth muscle?

Three muscle cells are placed side by side.

In muscle cell 1, striations are clearly visible.

In muscle cell 2, striations are also present, with sharp discs periodically found along muscle fibers. Further examination shows gap junctions between adjacent cells.

In muscle cell 3, no striations are present.

A physician takes a sample of tissue from a patient's leg. The sample contains both sections of the extensor hallicus longus, as well as sweat glands serving the anterior tibial surface. With regard to the muscle cell types described, which two muscle types are most likely to be found in this sample?

Which muscle tissue type lacks striations?

What are the two types of smooth muscle cells?

Which of the following is true regarding smooth muscle?

What are the preganglionic and postganglionic neurotransmitters of the sympathetic nervous system, respectively?

Which subtype of smooth muscle is found in the iris and vas deferens?

Which subtype of smooth muscle can you find in the uterus, bladder, and gastrointestinal tract?