Question

why can, t our elbows bend backwards?​

Answer 1

Explanation:

• Structurally joints don't bend both ways because there are physical components within their design that prevent or resist motion. This could be bone, such as the elbow joint, or it could be ligamentous restraint, such as in the knee. All joints in the body are a compromise between mobility and stability.

• Our elbow cannot move backwards because it has a hinge joint which allows the movement in one plane only

Answer 2

Answer:

This chapter specifically discusses about the body movements in animals and human beings by explaining about the various processes and parts involved in theirlocomotion. It explains the structure, location and function of different joints responsible for body movement in human beings. Formation of joints and other details are also described here. The next section of this chapter talks about the pattern of movement in different animals such as earthworm, snail, cockroach, birds, fish, etc.