Slides: are there striations across the width of the muscle cells? number of nuclei? what are the size, shape, and arrangement of fibers? what function occurs as a result of the contractions in the selected muscle? (see page 3 of the lesson) what is the relationship between structure and function in the selected muscle? (see page 3 of the lesson) muscle - human cardiac there are striations across the muscle. it only has one nuclei. intestines - outer wall detail (smooth muscle) there are no striations across the muscle. it only has one nuclei. slide 1: muscle- skeletal longitudinal section and slide 2: muscle-skeletal cross section