11. The period of time (a few milliseconds) between the stimulation of a muscle fiber and the onset · of shortening of the muscle is called: T + a) period of relaxationT + b) latent period™ + c)...

please answer 11,12,13,14

Extracted text: 11. The period of time (a few milliseconds) between the stimulation of a muscle fiber and the onset · of shortening of the muscle is called: T + a) period of relaxationT + b) latent period™ + c) period of contractionT + d) synthesis periodT 12. Increasing the strength of skeletal muscle contractions by increasing the speed of stimulation so that the second stimulus is delivered before the muscle has relaxed from the first stimulus is called:T + a) multiple motor unit summation¶ + b) wave, or temporal, summationT + c) threshold stimulus summation T + d) muscle fatigue 13. A lever system in which the effort is applied at one end of the lever and the fulcrum is located at - the other, with the load at some intermediate point between them, is called:T + a) a first-class lever systemT + b) a second-class lever system T + c) a third-class lever system T + d) a lower-class lever systemT 14. Sensory nerve fibers of the peripheral nervous system that carry impulses from the skin, skeletal · muscles and joints are called:T a) visceral afferents T + b) somatic afferentsT + c) cranial nerves T + d) visceral efferents T wwm w