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.
C. You should stop the activity completely if you feel pain. If you jog around you will increase the pain.
Answer:
In most cases for children with ITP, it tends to resolve itself within time. So, the initial treatment option would be to prescribe a steroid type medication, as in Glucocorticoids (such as prednisone) and then allow time to pass to see if the symptoms persist. A follow-up appointment will be placed to then determine if the child has had any other symptoms or if the initial symptoms still persist. Thus, surgery or blood transfusions may need to be done if it reaches a certain point.
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