contraction

Noun: contraction.

Verb: contract.

Adjective: contractive.

The word "contraction" comes from the Latin word "contractio," which means "drawing together" or "shrinking." It is made up of the prefix "con-," which means "together," and the verb "trahere," which means "to draw.".

What things can contract?

Question:

Describe the process of muscle contraction and its role in body movement.

Answer:

Muscle contraction is the process where muscle fibres shorten and generate tension, leading to the movement of body parts. It occurs when muscle fibres receive signals from motor neurons, causing the release of calcium ions, which activate proteins to slide past each other, resulting in muscle shortening and movement. Muscle contraction is essential for various body movements, such as walking, running, and lifting objects, enabling us to perform daily activities and physical tasks.