sarcomere
sacomeres are a single unit of a muscle fiber multiple sacomeres make up a myofibril
Actin filaments
sarcomere
The myofibril is the basic muscle cell, within which is the sarcomere, the basic unit of muscle contraction.
area in the muscle between the two Z discs.
myofilament myofibril myofiber fascicle muscle
Myofibril
Myofilaments Two types: actin (thin filament) & myosin (thick filament)
Actin, myosin
Myofibril
myofibril