Throat clearing, like coughs, is often a hangover from a viral respiratory infection such as a cold, and can persist after an infection for more than eight weeks. However, you donât mention having been ill, so the next thing to consider is your history of asthma.
And, vice versa. When the triceps contracts, pulling the lower arm back down to its starting position, the biceps relaxes. Most, but not all, of the skeletal muscles in your body work in these agonist-antagonist pairs. If the agonist flexes a muscle, then its antagonist extends the muscle.
1 Skeletal muscle: This type of muscle creates movement in the body. 2  There are more than 600 skeletal muscles, and they makes up about 40 percent of a personâs weight. 3  When the nervous system signals the muscle to contract, groups of muscles work together to move the skeleton.