In a contracted skeletal muscle fibre?

M line disappears

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

H-zone elongates

No worries! We‘ve got your back. Try BYJU‘S free classes today!

I-band remains constant

No worries! We‘ve got your back. Try BYJU‘S free classes today!

A-band disappears

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A M line disappears
The correct option is A.
M-line is the attachment site for the thick filaments. During muscle contraction, the thin filaments slide past the thick filaments or M-line. This shortens the sarcomere. During this, the A band which is composed of myosin remains the same.

Suggest Corrections

Similar questions

During muscle contraction, which of the following events occur?

(a) H-zone disappears
(b) A-band widens
(c) I-band reduces in width
(d) Width of A-band in unaffected
(e) M line and Z line come closer

Join BYJU'S Learning Program