Question

movement of legs is brought about by​

Answer 1

Explanation:

Movements of the body are brought about by the harmonious contraction and relaxation of selected muscles. Contraction occurs when nerve impulses are transmitted across neuromuscular junctions to the membrane covering each muscle fibre. Most muscles are not continuously contracting but are kept in a state ready to contract.

Answer 2

Answer:

Movements of the body are brought about by the harmonious contraction and relaxation of selected muscles. Contraction occurs when nerve impulses are transmitted across neuromuscular junctions to the membrane covering each muscle fibre. Skeletal muscles are attached to bones and produce movement at the joints.

Explanation:

Most muscles are not continuously contracting but are kept in a state ready to contract. The slightest movement or even the intention to move results in widespread activity of the muscles of the trunk and limbs.