Question

What do you mean by movement?

Answer 1

Movement is the act of moving or it is the change in position. There are many things involved in movements, such as speed, velocity, acceleration, gravity, magnetic attraction and repulsion, friction, and inertia. Movement is when the living organism moves a body part or parts to bring without a change in the position of the organisms. Locomotion is when the movement of a part of the body leads to change in the position of an organism.

Complete step by step answer:
Movement is one of the important features of living beings. Plants and animals exhibit different types of movements. Gushing of microfilaments in the cells of amoeba is an example of movement. Cytoplasmic streaming occurring in plants is also a form of movement. Movement flagella, cilia, and tentacles are examples of movement in organisms. The motion of limbs, eyelids, jaws, tongue in Human beings, are also a form of movement. Some movements result in a change of position or location. Such voluntary movements are called locomotion. Walking, running, climbing, flying, swimming, etc., are forms of locomotory movements. Cells of the human body exhibit three different types of movements, namely amoeboid, ciliary, and muscular movements. For example leukocytes and macrophages exhibit amoeboid movement. Cytoskeletal elements like microfilaments are involved in the amoeboid movement. Ciliary movements occur in our internal organs. For example, the ciliary movement in the respiratory tract helps to remove dust particles and other foreign molecules entering the lungs. The cilia in the reproductive tract of females help in the movement of eggs. Movement of limbs, jaws, tongue, etc. requires muscular movements. The contractile properties of muscle help in locomotion. Locomotion requires coordinator activity of muscular, skeletal, and neural systems.

Additional information:
- Muscles form the contractile tissue, concerned with all kinds of bodily movements, including locomotion.
- They serve as the biological system for transmitting chemical energy to mechanical energy and mechanical work.
- Muscles are endowed with four principal characteristics, which are important in maintaining homeostasis; they are excitability, contractility, extensibility, and elasticity.
- Excitability is the ability of muscles to perceive stimuli and respond to them.
- contractility is the ability of a muscle to shorten and thicken when stimulated.
- Elasticity is the ability for extension and recoil.

Note:
- The method of locomotion performed by animals varies with their habitats and the demand of situations.
- However, locomotion is generally for the search of food, shelter, mate, suitable breeding grounds, favorable climatic conditions or to escape from enemies or predators.
- Locomotion and many other movements require coordinated activity of muscles. The three types of muscles in human beings are striated muscles, visceral muscles, and cardiac muscles.