What is the location of troponin in the process of muscle contraction?

Skeletal muscles are closely associated with the $...A...$ components of the body. They have $... B...$ appearance under the microscope and hence are called $...C...$ muscles.
Choose the correct options to fill $A, B$ and $C$,so as to complete the given $NCERT$ statement.

'Oxygen debt' is the amount of oxygen required for

Choose the correct properties of muscle fibres.
$I.$ Muscle fibre is lined by the plasma membrane called sarcolemma.
$II.$ Cytoplasm of the muscle fibre is called tonoplasm.
$III.$ Sarcolemma of the muscle fibre encloses the sarcoplasm.
$IV.$ Muscle fibre is a syncytium.
Select the correct option.

Action potential in the sarcolemma of muscles causes the release of:

The interval between the beginning of the electrical response and the peak of tension recorded is known as the: