MYOFIBRIL STRUCTURE

• WHAT IS A MYOFIBRIL MADE UP OF?

  two types of protein filament
• WHAT ARE THE TWO TYPES OF PROTEIN FILAMENTS A MYOFIBRIL IS MADE UP OF?

  actin and myosin
• WHAT IS ACTIN?

  two chains of globular proteins twisted around each other
• WHAT IS MYOSIN?

  fibrous protein with long rod-shaped tails and bulbous heads
• WHICH IS THICKER MYOSIN OR ACTIN?

  myosin is thicker than actin