If electrical conduction in the heart is stopped or delayed, it is called:
a. bradycardia.
b. tachycardia.
c. premature complex.
d. heart block.
D
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________ The sweat resulting from heavy exercise increases the concentration of electrolytes in the body
Indicate whether the statement is true or false
EAS stands for:
a. Emergency Action System. b. Emergency Alert System. c. Emergency Airway Suction. d. Emergency Action Siren.
Answer the following statement(s) true (T) or false (F)
1. Smooth muscle contraction is stimulated by acetylcholine and norepinephrine. 2. Intercalated discs allow muscle fibers to contract separately. 3. Cardiac muscle must have nerve stimulation to contract and relax. 4. Norepinephrine increases the heart rate. 5. ATP can be defined as energy needed for muscle activity.
If electricity is supplied to a building by underground cables, where would be a likely location for the shut-off?
a. in a remote switching house b. in a underground vault c. next to the gas service meter d. on the meter panel