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Questions and Answers
Which bands on the myofibrils are called A bands?
Which bands on the myofibrils are called I bands?
What is the area between two adjacent Z-lines called?
Study Notes
Myofibril Structure
- A bands are the dark bands on the myofibrils, containing thick filaments of myosin.
- I bands are the light bands on the myofibrils, containing thin filaments of actin.
- The area between two adjacent Z-lines is called a sarcomere, which is the functional unit of muscle contraction.
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Description
Test your knowledge on the organization within muscle fibers with this quiz. Learn about the different bands and structures found in longitudinally sectioned skeletal muscle fibers.
