ECG can be analyzed by studying components of the waveform. These waveform components indicate cardiac electrical activity. The first upward of the ECG tracing is the P wave. It indicates atrial contraction. The QRS complex begins with Q, a small downward deflection, followed by a larger upwards deflection, a peak (R); and then a downwards S wave. This QRS complex indicates ventricular depolarization and contraction.
chica (plural chicas) (Canada, US, informal) A Latin-American girl; a Latina. 2005, Magnolia Belle, Black Wolf: Lakota Man But, I thought you wanted to come with us. There are some hot chicas just waiting for the Black Wolf boys..
Chia is an edible seed that comes from the desert plant Salvia hispanica, grown in Mexico dating back to Mayan and Aztec cultures. Chia means strength, and folklore has it that these cultures used the tiny black and white seeds as an energy booster.