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.
What Muscles Do. 1. Contract (squeeze) and thereby cause the movement of different parts of the body. For example, they move joints and bones so we can do things like raise our arm and walk. Muscles move food along our digestive system, open and close our eyes, circulate blood through our body. Different types of muscles carry out different actions. 2. Keep joints (like the hip joint) stable and in place.