Question

The contractile element present in a striated muscle fibril,between two successive Z-lines,is called (1)Sarcomere (2)Sarcoplasm (3)Sarcosomes (4)All of these

Answer 1

Answer:

1 is the correct answer (first )

Explanation:

A sarcomere is the complicated unit of striated muscle tissue. It is the repeating unit between two Z lines. ... Sarcomeres are composed of long, fibrous proteins as filaments that slide past each other when a muscle contracts or relaxes.

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Answer 2

Explanation:

sarcomere

A sarcomere extends from Z line to Z line and is the contractile unit of striated muscle. With muscle contraction, a change in configuration occurs; the H zone width decreases as the actin filaments slide past the myosin filaments. The sarcomere is shortened; as this occurs along the muscle, muscle length is decreased.