ADA NBDHE Dental Hygienist

Answer: B - Smooth muscle is composed of small, tapered cells with a single nucleus. There are two types of smooth muscle tissue. Visceral, the most common type, are gap junctions that join the smooth muscle fibers into large, continuous sheets of visceral muscle. It forms a muscular layer in the digestive, urinary, and reproductive tracts. Multiunit smooth muscle is composed of many independent cell units and each of its fibers responds only to nervous input.