How do you tell the difference between dense regular connective tissue and smooth muscle when looking at slides?

Dense regular connective tissue:

* Bundles of collagen fibers running in the same direction

* Often has a wavy appearance

* Nuclei are spindle-shaped and located between the collagen fibers

Smooth muscle:

* Bundles of smooth muscle cells running in the same direction

* Cells are elongated and have a centrally located nucleus

* The cytoplasm of smooth muscle cells contains myofilaments, which are responsible for contraction