Shivering with cold in winter is caused by

The plasma membrane of the muscle fibre is called

Arrange the following steps of muscle contraction in the sequence of events occurring first:
$I.$ Receptor sites on sarcolemma
$II.$ Nerve impulse
$III.$ Release of $Ca^{2+}$
$IV.$ Acetylcholine release
$V.$ Shortening of sarcomere
$VI.$ Synaptic cleft
$VII.$ Spread of impulse over sarcolemma on $T$-tubule
The correct option is:

Which of the following interacts with skeletal muscles to produce movement?

Red muscle fibres are rich in

Identify the odd one out from the following list.