The muscles that move the pinna (ear lobe) in rabbits are .....

In which of the following,growth is possible through increase in volume?

Total number of muscles in the human body is:

Assertion : The phase of muscle contraction occurs when myosin binds and releases actin.
Reason : Muscle contraction is initiated by a signal sent by the peripheral nervous system via motor neuron.

The actin filament is shown below. Where does $Ca^{++}$ bind during muscle contraction?

In a muscle fiber,$Ca^{++}$ is stored in the .....