The Atomic Number Is Determined by the Number of ____

question 65

Multiple Choice

The atomic number is determined by the number of ____.​

• A) protons​
• B) ​neutrons
• C) ​electrons
• D) protons plus neutrons​
• E) ​protons plus electrons

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Definitions:

Semilunar Valves

Valves located at the exits of the heart, preventing blood from flowing back into the ventricles from the arteries.

Diastole

The phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood.

Systole

The phase of the heartbeat during which the heart muscle contracts and pumps blood from the chambers into the arteries.

Ventricular Filling

The phase of the cardiac cycle when the heart's ventricles fill with blood coming from the atria.