Slide 20: Heart muscle
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H/E
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This is a longitudinal section through heart muscle. To view the cross striations the condenser of the microscope must be turn downward to produce contrast.
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Identify microscopically:
- Muscle fibers and branchings
Nuclei of the heart muscle fibers and connective tissue Intercalary discs and cross striations Connective tissue
Draw and annotate:
A heart muscle fibre. Indicate the characteristic components in detail.
Reflection:
- What is characteristic of heart muscle fibers?
- How do heart muscle fibers differ from skeletal and smooth muscle?
- What is the connective tissue found between the heart muscle fibers called?
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