Answer:
The plateau phase seen during the action potential of a cardiac muscle cell is due to e. opening of calcium fast channels.
Explanation:
During cardiac contraction, myocardic cells reach a phase called phase 2 in which thanks to the umbral valor that they reach on the previous phase 1, calcium fast channels that are voltage dependent are open. Those fast channels just stay open by a few decimals of seconds. When those channels of calcium are open, a lot of calcium ions get into the cell maintaining depolarization of the myocardic cells. All positive charge that posses the cell due to the previous situation, causes efflux of potassium(an ion which have also a positive charge) like a way to reach a physiologic balance.
Answer:
A. Report this as a Serious Adverse Event (SAE).
Explanation:
When undergoing a trial using a medical product, subjects might sometimes experience certain negative effects referred to as Serious Adverse Events. These effects might range from, hospitalization, death, congenital defects, disabilities, etc.
If the medical personnel suspects that the negative effect was as a result of the medical product used, it becomes necessary to report such as a Serious Adverse Event. So, in the scenario above where a participant suddenly misses participation and his death becomes known through public records, suspicions might be that the death was a serious adverse event caused by the study.
Answer:
The trainer should stop the training sessions, and the pregnant woman should go see her doctor.
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