Definition of myofibril in English:
Any of the elongated contractile threads found in striated muscle cells.
- In cross section, skeletal muscle fibers are seen to be composed of numerous small aggregates of contractile substance, the myofibrils.
- Briefly, the cardiac myofibrils are composed of the major contractile proteins, actin and myosin.
- Individual muscle cells are extremely elongated and enclose many-stranded cables woven from threads called myofibrils.
Definition of myofibril in:
- British & World English dictionary
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