Which of the following is a contractile protein?

Striated and voluntary muscle fibres are found in

Globular protein which masks active sites on $G$-actin is :-

The triceps muscle connects the ulna with which of the following bones?

Cardiac muscle fibres are

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: