Question

what is myofibrils ?????????​

Answer 1

Answer:

MYOFIBRILS

Myofibril, very fine contractile fibres, groups of which extend in parallel columns along the length of striated muscle fibres. The myofibrils are made up of thick and thin myofilaments, which help give the muscle its striped appearance.

Answer 2

Explanation:

■ WHAT IS MYOFIBRILS?■

》》 Myofibril, very fine contractile fibres, groups of which extend in parallel columns along the length of striated muscle fibres. The myofibrils are made up of thick and thin myofilaments, which help give the muscle its striped appearance.

■Location■

A myofibril is a long cylindrical organelle found in muscle cells formed by two transverse filament systems: the thick and thin filaments. The thin filament is composed primarily of actin; it is tethered at one end to the Z-disk, and it interdigitates with the thick filaments.

●Size■

Each myofibril is about one or two micrometres (1 micrometre = 10−6 metre) in diameter and extends the entire length of the muscle fibre. The number of myofibrils per fibre varies.