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The period after an initial stimulus when a neuron is not sensitive to another stimulus (no matter how strong) is called the ________.    

A synapse that connects one neuron to another neuron consists of all of the following components except:     

Collections of neuron cell bodies in the central nervous system are called ________.  

The triad in the muscle cell is:

An extensor of the elbow joint is:

As you increase the frequency of stimulation of skeletal muscle the tension increases, causing wave summation and tetany. This is due to build up of__________ within the muscle cells.   

A contraction in which the muscle tension builds up, but the muscle does not change length and no movement occurs is   

This is the layer of connective tissue surrounding a  muscle fascicle.    

Smooth muscle cells have actin & myosin filaments and sarcomeres.

During  excitation-contraction coupling which brings about contraction, calcium ions bind to the ________ molecule in skeletal muscle cells.