Answer:
1. spontaneously
2. resting potential
3. action potentials
4. pacemaker potentials
5. K+
6. Na+
7. into
8. Ca+
Explanation:
Pacemaker cells (also known as sinoatrial node cells) are cells that generate rhythmic impulses and set the pace for blood pumping in the heart. These cells have the ability to rhythmically depolarize and initiate action potentials. In pacemaker cells, Ca2+ and Na+ levels are higher in the extracellular environment, while K+ concentration is higher intracellularly. The pacemaker action potentials have three phases: 1-depolarization, where membrane potential reaches -40 mV and voltage-gated Ca2+ channels open, 2-repolarization, where voltage-gated Ca2+ channels close and voltage-gated K+ channels open, and finally 3-gradual depolarization, which is caused by the slow influx of Na+ ions.
It is the sensors.... <span />
Answer:
B.
Explanation:
Smallware-washing is the process of collecting and cleaning the dishes used in preparation, serving, and storing food in restaurant. The dishes include cutlery, pots, glasses, kitchenware, etc. The three-compartment sink is a five-step process to clean the dishes.
The step which is incorrect for smallware-washing in a three-compartment sink is to use sanitizer to kill germs. The sanitizer used to sanitize the dishes is hot water or chemical mixed solution.
Therefore, option B is correct.