Which of the following best describes contractility?

What starts the release of calcium from the sarcoplasmic reticulum in a muscle fiber?  

Which artist first made it his artistic practice to omit the preliminary sketch and use premixed pigments?

Canaletto’s paintings of the scenic views, or vedute, of Venice are so realistic looking and accurate in their depiction of space and depth that art historians believe he also employed a __________ to help him produce his paintings. 

The term ‘Rococo’ comes from the French term ___________, like a pebble, but it usually refers to the shape of the small shells used as a motif to decorate interiors. 

Which artist explored the possibilities of bold colors and distorted forms, often employing energetic and thick brushstrokes?

Soon after Louis XIV died, the artistic center in France started gradually shifting from his crowded court at Versailles to the elegant, private townhouses of Paris, known as _________.

This term refers to a mechanical model of the solar system, or of just the sun, earth, and moon, used to represent their relative positions and motions as exemplified in the image below.  

In Jacques-Louis David’s Death of Marat, shown below, the figure lays limp in a position similar to that of another work we have looked at previously. What is this other work? 

In Gustav Klimt’s The Kiss, how does the artist use flat patterning to distinguish between the male and female figures?