The anaerobic contraction of skeletal muscle causes deposition or accumulation of

Striped and branched muscles are found in

Choose the correct statements regarding muscle contraction. $A$. $A$ motor neuron carries a signal sent by the Central Nervous System $(CNS)$ to the sarcolemma of the muscle fibre. $B$. The neural signal generates an action potential which causes the release of $Ca^{++}$ into sarcoplasm. $C$. Increase in $Ca^{++}$ inactivates the actin for breaking cross bridges. $D$. Actin binds to the myosin head to form a cross bridge. $E$. Shortening of sarcomere takes place, by pulling actin filaments towards the centre of '$A$' band. Choose the correct answer from the options given below:

The contraction of muscle of shortest duration is seen in

Which muscle band remains unchanged during the contraction and relaxation of the skeletal muscle?

What is the source of energy for muscle contraction?