Question

help please

To demonstrate an understanding of the myofilaments, place the labels the correct location on the image. Myosin tail Thin filament ATP Tropomyosin Myosin head ADP Actin Thick filament Actin-binding Troponin

Answer 1

Understanding of myofilaments:

The given structures in myofilaments are labelled and is attached below:

Myosin tail Troponin ATP Actin Thin filament Tropomyosin Thin ATP filament Tropomyosin Myosin head Actin-binding site ADP Actin Thick filament Actin-binding Thick filament Myosin Troponin Myosin tail head ADP Reset

• The sarcomere is composed of myofilaments, which are the contractile units of striated skeletal and cardiac muscles. These myofilaments occupies 70% of the total heart tissue.
• Myofilaments contain thick and thin filaments.
• It contains the chains of actin and myosin for packing muscle fiber. It contains globular head and a long tail.
• The thin filament is composed of actin, troponin and tropomyosin. The thick filament is composed of myosin.
• The globular head contains sites for ATP and actin binding and the long tail helps in polymerization into myosin filaments. ATP is hydrolyzed to ADP by the enzymatic activity.
• The interaction between actin and myosin causes muscular contractions.

Thank you!