lab quiz (oh boy I sure hope I don't have a long day, behind me stand the long day factory >~<)

what is a motor unit

a motor neuron and all the skeletal muscle fibers it innervates

what affects strength of a muscle contraction.

wave summation, recruitment, amount of muscle stretched

Rank in order from least to greatest stimulus frequency the types of wave summation

single twitch, wave summation, incomplete tetanus, complete tetanus

what contracts in an all or nothing matter

a muscle fiber

order the events of a muscle twitch.

stimulation, latent period ,contraction, relaxation

As stimulus strength is increased, the force of a twitch response increases. What does this represent?

increased recruitment

the five characteristics of muscle tissue

extendable, contractable, elasticity, conductible, excitable

what does a sarcomere not do

act by actively lengthening to move muscle

An individual has been given a treatment that prevents the release of calcium from the sarcoplasmic reticulum.  Which two of the following consequences would NOT be expected if the muscle is stimulated using a nerve stimulator?  

a decrease in amplitude EMG
an increase in stimulation between stimulation and peaks

what is summation

the end or total of the stimulus and contraction, when everything is done