Sliding Filament Theory

Question 1

What does sliding filament theory explain?

Answer 1

Sliding ailment theory explains how muscles contract when stimulated.

Question 2

How does the sliding filament theory happen?

Answer 2

Theres a reaction between the myosin and the actin in each muscle and cross-bridges are formed on the actin filament. The amount of force produced depends on the number of cross bridges formed.

Question 3

What does muscle consist of?

Answer 3

Each muscle contains thousands of muscle fibres up to 30cm long. These bundles are called fascicles (run parallel to each other, as do fibres), which are protected by a dance sheath called perimysium. Each muscle can be broken down into hundreds of myofibrils.

Question 4

What are Myofibrils?

Answer 4

Myofibrils are cross striated with light and dark filaments. The dark bands are actin. One unit of these bands is called the sarcomere