the rounded portion of the brain, directly behind the cerebrum in birds and mammals, that serves mainly to coordinate movement, posture, and balance. [1555â65; < Latin: brain, diminutive of cerebrum (for formation see castle)] cer`eâ¢belâ²lar, adj.
A pulled muscle is a painful injury that is caused when muscle fibers become torn. These injuries are usually caused by engaging in physical activity without properly warming up first. They can also occur when a person who is not in shape does something that is strenuous to the muscles.
Â· just now. Report Abuse. A pulled muscle is more of a strain--the muscle has been stretched too far and causes pain. A muscle spasm is when a muscle is irritated for whatever reason and keeps moving on its own, sudden involuntary contractions. You can have both at the same time, though. Me Â· 8 years ago.