The answer is skin
The first line of defence is your innate immune system. Level one of this system consists of physical barriers like your skin and the mucosal lining in your respiratory tract. The tears, sweat, saliva and mucous produced by the skin and mucosal lining are part of that physical barrier, too.
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Sooo I'm literally in high school but I wanna be a doctor so I'm gonna see if I can answer this with some course of knowledge. So I'm assuming that since hes a male medical <u>assistant,</u> and the girl is 18, he is allowed to preform an EKG? I also know that if he has proper training he can preform an EKG. It seems kinda weird that no other staff attendees were in the exam room, and how she was instructed to remove her clothing and was obviously not comfortable. He should have asked the girl if she wanted someone else in the room with her, such as a female medical assistant or even just another female. I think he should have also given her something to drape over herself, once the pads were in place. Maybe since she didn't have a drape over her she became cold, and anxious. That's all I can really answer:)
Increasing extracellular K+ increases the positive charge outside the cell, making the inside of the cell (membrane potential) more negative. This inhibits net diffusion of Na+ into or out of the cell.
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Doctors believe that diet, medical care, and other lifestyle decisions affect fetal development later in pregnancy. Certain genetic factors can influence things like fetal growth, but this is most shown in the first trimester. Doctors and nutrition experts suggest improving nutritional health several months to a year before planning to become pregnant. Improper nutrition, stress, and overreliance on caffeine, nicotine, or other substances can sometimes impact fertility.
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