Immediately following the arrival of the stimulus at a skeletal muscle cell there is a short period called the period during which the neurotransmitter is released by exocytosis, diffuses across the synaptic cleft, and binds to its receptors.
a) contraction b) latentc) relaxation d) refractory

answer; immediately following the arrival of the stimulus at a skeletal muscle cell there is a short period called the  

b)

it's a nutrition food for pregnant mothers so they unborn child can get its nutrition that it needs to grow in to a healthy baby.

explanation:

and the mother is getting all of her nutrition and her calcium and vitamins .

answer; i believe the answer is moderate level;