Final answer:
Muscle tension is the ability to exert muscular force under a given condition. It is generated by the contraction of muscles and is influenced by various factors.
Step-by-step explanation:
The ability to exert muscular force under a given condition is known as muscle tension. Muscle tension refers to the force generated by the contraction of muscles, which results in the shortening of sarcomeres. It is important for movements and physical activities, and is influenced by factors such as the number of myofibers involved and the frequency of action potentials.