Covers the types of muscle tissue and their microscopic organization, focusing on the structure and function of myofibrils, sarcomeres, and myofilaments.
Smooth muscles are involuntary and non-striated, not voluntary and striated.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Muscle - Types and Structure - Myofibril Sarcomere Myofilament
Smooth muscle fibers are non-striated, unlike skeletal and cardiac muscles.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Muscle - Types and Structure - Myofibril Sarcomere Myofilament
Skeletal muscles are under voluntary control and are responsible for body movements.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Muscle - Types and Structure - Myofibril Sarcomere Myofilament
Cardiac muscles are striated and branched, unlike smooth muscles, which are non-striated.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Muscle - Types and Structure - Myofibril Sarcomere Myofilament
The Z-line anchors actin filaments and marks the boundary of a sarcomere, the functional unit of muscle contraction.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Muscle - Types and Structure - Myofibril Sarcomere Myofilament
Myosin forms thick filaments and plays a crucial role in muscle contraction.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Muscle - Types and Structure - Myofibril Sarcomere Myofilament
Skeletal muscle fibers are voluntary, not involuntary.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Muscle - Types and Structure - Myofibril Sarcomere Myofilament
Skeletal muscles are under voluntary control and allow body movements.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Muscle - Types and Structure - Myofibril Sarcomere Myofilament
Tropomyosin regulates muscle contraction by blocking the myosin-binding sites on actin filaments.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Muscle - Types and Structure - Myofibril Sarcomere Myofilament
Titin is an elastic protein that allows muscle fibers to return to their resting state after contraction.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Muscle - Types and Structure - Myofibril Sarcomere Myofilament
The M-line anchors myosin filaments in the center of the sarcomere.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Muscle - Types and Structure - Myofibril Sarcomere Myofilament
Actin filaments interact with myosin during muscle contraction, leading to movement.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Muscle - Types and Structure - Myofibril Sarcomere Myofilament
