Share this entry
myofibril Line breaks: myo|fib¦ril
Pronunciation: /ˌmʌɪə(ʊ)ˈfʌɪbrɪl/

Definition of myofibril in English:


Any of the elongated contractile threads found in striated muscle cells.
Example sentences
  • 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:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove ads and access premium resources