The Rule That Neurons Are Either on or Off Is

question 104

Multiple Choice

The rule that neurons are either on or off is known as the _____ law.

• A)intensity of stimulus
• B)graded action
• C)all-or-none
• D)incremental transformational

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Definitions:

Papillary Muscles

Muscles located in the ventricles of the heart, attaching to the cusps of the atrioventricular valves via chordae tendineae and preventing valve inversion.

AV Valves

The atrioventricular valves, consisting of the tricuspid and mitral valves, are located between the atria and ventricles in the heart, regulating blood flow and preventing backflow.

Semilunar Valves

Heart valves located at the bases of the aorta and the pulmonary artery that prevent backflow of blood into the ventricles during systole by opening to allow blood ejection and closing during diastole.

Streptokinase

An enzyme used to dissolve blood clots in the treatment of heart attack and pulmonary embolism.