Identify microscopically:

1. Muscle fibers

2. Nuclei of the heart muscle fibers

3. Connective tissue

Draw and annotate:

A few cross sectioned heart muscle fibers.

1. What is characteristic of heart muscle in cross section?
2. How does heart and skeletal muscle differ in cross section?
3. Which connective tissue/s found in skeletal muscle is/are also found in heart muscle?

Microscope