Answer:
It is important because if your cells do not reproduce you would eventually run out of cells and die.
Explanation:
The liver's main function is to process the nutrients absorbed from the small intestine
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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.
<span>Anaerobic is the kind of</span> exercise that does not require the use of oxygen to metabolize energy. Anaerobic focuses more on muscle strength exercises such as lifting. Though it requires energy still it can be performed with less air.
It should be fifteen to twenty percent of north american adults
