1. The point at which a stimulus will produce a cell response is called the: a. Active state c. Threshold b. All-or-none phase d. Rest state 2. An increase in potassium blood levels is known as: a....

1. The point at which a stimulus will produce a cell response is called the:

a. Active state c. Threshold

b. All-or-none phase d. Rest state

2. An increase in potassium blood levels is known as:

a. Hypernatremia c. Hypercalcemia

b. Hypokalemia d. Hyperkalemia

3. The sinoatrial node is located in the:

a. Right atrium

b. Right ventricle

c. Purkinje fiber tract

d. Atrioventricular septum